Brothers

Stories that feature intimate relations between brothers (not necessarily actual sex, though this is often the case).

  Child of:  Incest. Related tags:  Brothers;Father/Son;Selfcest;Triplets;Twins.

  Tag Group:  Family.

A 10

Absolute general relativity by brazboy Matias, Murilo, and Marcelo are three brothers in very different stations in life, navigating a world organized by a single universal, albeit apparently contradictory, principle—absolute general relativity. Added Aug 2023 1,934 views 5,999 words •Huge Balls•Huge Cock•Public Nudity•Incest•Brothers •M/M•M/M/M•M/t

Adam’s first growth spurt by MDS Adam comes home from a day of being bullied at school to find he definitely won't have to worry about anything like that after today. Added Nov 2016 55k views 4.3 stars (15 votes) 2,350 words •Huge Cock•Muscle Growth•Muscle/Strength•Giants•Size Increase•Incest•Brothers

Alex’s gift by Will Bowden A teen discovers his shapeshifting ability, which seems to be tied to the horniness of other guys. 3 parts Added Apr 2003 40k views 4.6 stars (17 votes) 4,345 words •Incest•Brothers•Shapeshifting •t/t

All good things by Anon Amon After the discovery of an ancient artifact, life is changed forever for a group of college students who have bigger things to worry about than getting ready to start classes. 111 parts Added Feb 2017 Updated 29 Oct 2022 217k views 4.6 stars (144 votes) 132k words (#9) •Cock Growth•Cockfucking•Huge Balls•Huge Cock•Hyper Cock•Cum inflation•Hyper Cum•Nipple Emissions•Straight to Gay•Hyper Muscle•Hyper Strength•Immobility•Muscle Growth•Muscle/Strength•Giants•Size Increase•Incest•Brothers•Twins•Infectious•Pagan gods•Complete •M/M•M/M/M

Alpha Logan claims a beta by Eric Aaldersen Shortly after becoming an alpha, Brian’s younger brother Logan sites a beta of his own while working out in the local gym. Added Dec 2021 10k views 5.0 stars (5 votes) 4,961 words •Cock Growth•Huge Balls•Huge Cock•Hyper Cum•Hyper Strength•Muscle/Strength•Gradual Change•Incest•Brothers•Hyper Pheromones•Supernatural •M/M

Alpha Luke grows his circle by Eric Aaldersen Now fully aware of his alphahood, Luke breeds some more betas hoping to make Brian an alpha like him. Luke and Mike finally bond as they were meant to. Added Mar 2020 11k views 5.0 stars (6 votes) 8,980 words •Huge Balls•Huge Cock•Muscle Growth•Muscle/Strength•Incest•Brothers•Supernatural

Alpha Mike and his alpha bro by Eric Aaldersen Meet Alpha Mike, Luke’s older brother, on the day that he discovers that his little bro is an alpha, too! Added Mar 2020 12k views 4.5 stars (17 votes) 5,437 words •Cock Growth•Huge Balls•Huge Cock•Muscle Growth•Muscle/Strength•Gradual Change•Incest•Brothers•Supernatural •t/t

Alpha product series by Chet Boner 19-year-old Trent accepts a free trial product series called “Alpha Product” in exchange for his feedback. He receives the first product very quickly, but doesn’t know how many people would be affected and grow as a result of this choice! 19 parts Added May 2017 Updated 11 May 2019 86k views 4.3 stars (43 votes) 23k words •Cock Growth•Huge Balls•Hyper Cum•Nipple Emissions•Muscle Growth•Muscle/Strength•Age Difference•Incest•Brothers•Father/Son•Stories with Images •M/M•M/M/M

Another big morning by Thatbadwriter It never fails. You’re sitting there on the living room floor with your cereal trying to watch some TV, when your dad comes down and decides Saturday morning is the perfect time to start growing and getting himself off. And then your horny brother comes home… Added Nov 2020 24k views 4.2 stars (5 votes) 1,226 words •Cock Growth•Huge Balls•Huge Cock•Hyper Cock•Hyper Cum•Muscle Growth•Muscle/Strength•Giants•Size Increase•Incest•Brothers•Father/Son•Destruction/Violence•Complete •M

The awakening by Johnny M Danny’s secret muscle-breast fantasy kink begins bleeding into the real world. 10 parts Added Jul 2012 63k views 4.7 stars (21 votes) 25k words •Hyper Cum•Nipple Emissions•Muscle Breast•Muscle/Strength•Age Difference•Incest•Brothers•Father/Son •M/M•M/M/M•M/M/M/...

B 19

Baby brother by Shawn D. Stewart "Kev, did you see a glass here?” “Whoa, man, was that yours? Sorry… I was really thirsty…” “You drank it!?” Aaaaand off we go! Added Mar 2003 124k views 4.4 stars (41 votes) 2,879 words •Cock Growth•Muscle Growth•Muscle/Strength•Getting Taller•Incest•Brothers

Bad suggestion by pkak2k12 I’ve learned what I say about others happens. However, I’m still figuring out how to use it, and my best friend and little brother kind of ended up being test subjects for it. Added Sep 2022 12k views 4.6 stars (25 votes) 1,619 words •Cock Growth•Muscle Growth•Muscle/Strength•Getting Taller•Plausible Size Difference•Size Increase•Retcon•Suggestion•Incest•Brothers •M/M•M/t

Bali encounter by LenZelig On a trip to Bali, a happily married couple, Pete and Lori, encounter a pair of irresistibly beautiful muscle twins named Wayan and Kadek, and then their family and friends… and things become deliciously complicated. 2 parts Added Nov 2017 Updated 8 Dec 2017 15k views 5.0 stars (10 votes) 29k words •Cock Growth•Huge Cock•Muscle Growth•Muscle/Strength•Getting Taller•Size Increase•First Time/Virgin•Incest•Brothers•Twins•Bisexual•Hetero Sex•Dom/Sub •M/M•M/M/M•M/F•M/M/F

A Barber story: The Titan Brothers by Ogrebear Two men from opposite ends of life get a world-changing haircut.  Added Dec 2022 6,601 views 5.0 stars (9 votes) 5,252 words •Cock Growth•Huge Balls•Huge Cock•Public Orgasm•Hyper Strength•Muscle Growth•Muscle/Strength•Getting Handsomer•Getting Taller•Plausible Size Difference•Size Increase•Age Regression•Getting Hairy•Retcon•Suggestion•Incest•Brothers•Twins •M/M

Bending the straight boys by iciss At first all those hot straight guys seemed like real jerks. And then they started getting hunkier, and hornier, and a lot more aware of each other. 2 parts Added Jan 2008 72k views 4.7 stars (39 votes) 11k words •Cock Growth•Huge Cock•Public Orgasm•Straight to Gay•Muscle Growth•Muscle/Strength•Getting Handsomer•First Time/Virgin•Incest•Brothers•Twins•Nonconsensual change•Infectious •M/M•M/M/M

Ben’s escapades by Kaelan Ben undergoes medical treatment to make his genitals unusually huge, but is he ready for the dramatic changes that it’ll bring to the rest of his life? 9 parts Added Feb 2018 Updated 15 Jun 2018 59k views 4.7 stars (41 votes) 34k words •Cock Growth•Huge Balls•Huge Cock•Hyper Cock•Self-suck•Hyper Cum•Nipple Emissions•Muscle Growth•Muscle/Strength•Gradual Change•Incest•Brothers •M/M•M/M/M

Beta Logan and his big brother by Eric Aaldersen Logan has difficulty controlling himself as his older brother Brian becomes a bigger and bigger stud. Added Jun 2020 23k views 5.0 stars (16 votes) 6,499 words •Cock Growth•Cut to Uncut•Huge Balls•Huge Cock•Hyper Cum•Hyper Strength•Muscle Growth•Muscle/Strength•Gradual Change•Incest•Brothers•Hyper Pheromones•Supernatural •t/t

Beyond Marrakech by brazboy What lies beyond Marrakech, gateway to the inhospitable Sahara? There lie lush green oases amidst the endless sand, made possible and populated by an unusual variety of men, their society, their rules and rulers. 6 parts Added Feb 2023 3,861 views 4.8 stars (8 votes) 10k words •Always Hard•Huge Balls•Huge Cock•Hyper Cock•Hyper Cum•Nipple Emissions•Public Orgasm•Muscle/Strength•Public Nudity•Increased Libido•Giants•Plausible Size Difference•Age Difference•First Time/Virgin•Incest•Brothers•Dom/Sub•Sex-Slave•Medieval(ish) •M/M•M/M/M/...

Body game: Encounter 813 by BRK Reggie isn’t sure why the team-building get-together for the web design firm he’s working for is being held at an abandoned mall; he just knows he can’t get his sexy boss out of his mind. 9 parts Added May 2016 Updated 12 Jun 2021 41k views 4.9 stars (28 votes) 49k words (#70) •Always Hard•Cock Growth•Huge Balls•Huge Cock•Hyper Cock•Hyper Cum•Extra digits•Multi-abs•Multicock•Multiarm•Multilimb•Multipec•Multitongue•Replication•Stacking•Muscle Growth•Stretchy•Foot Growth•Getting Taller•Plausible Size Difference•Size Increase•Getting Hairy•Hyper Tongue•Tongue Growth•Mouthcock•Incest•Brothers•Selfcest •M/M•M/M/M

The bodyguards by MaxMorphs Two already huge and beautiful brothers apply for a job guarding a man who might be able to help them get even bigger. 9 parts Added Apr 2021 Updated 21 Aug 2021 47k views 4.8 stars (47 votes) 22k words •Cock Growth•Huge Balls•Huge Cock•Hyper Cock•Nipcocks•Hyper Cum•Nipple Emissions•Multicock•Hyper Muscle•Muscle Growth•Muscle Gut•Muscle/Strength•Belly Growth•Gradual Change•Plausible Size Difference•Size Increase•Inflation•Incest•Brothers•Twins •M/M•M/M/M

Boosted by West Phil has a clumsy moment, and suddenly the school’s Augmented Reality room ends up being so much more. 3 parts Added Aug 2021 Updated 4 Sep 2021 16k views 4.6 stars (23 votes) 5,429 words •Cock Growth•Huge Cock•Hyper Cock•Hyper Cum•Multi-abs•Hyper Muscle•Muscle Growth•Muscle/Strength•Getting Handsomer•Getting Taller•Plausible Size Difference•Size Increase•Tongue Growth•A.I.-Controlled Change•App•Incest•Brothers•Infectious•Complete

The box by BRK Steve gets a box of clothes from his mysterious and beautiful brother, Peter, and it turns out the clothes have an amazing effect on his already unusual body. 8 parts Added Dec 2002 Updated 7 Sep 2019 29k views 5.0 stars (13 votes) 30k words •Cock Growth•Huge Cock•Public Orgasm•Extra digits•Multicock•Multihead•Four Legs•Multiarm•Multileg•Multilimb•Replication•Muscle Growth•Stretchy•Getting Handsomer•Getting Taller•First Time/Virgin•Incest•Brothers•Selfcest•Witch/Warlock/Wizard •M/M•M/M/M•M/M/M/...

Brandon’s bro by FanTCMan Brandon initiates his brother onto a secret society of guys who are being made more and more muscular, hung, and sexy. 4 parts Added Jan 2017 27k views 4.5 stars (26 votes) 8,692 words •Cock Growth•Huge Cock•Muscle Growth•Muscle/Strength•Getting Hairy•Incest•Brothers

Brother dear by MsclGuy Added Jul 2002 28k views 3.9 stars (8 votes) 766 words •Muscle/Strength•Incest•Brothers

Brotherly love by Seth Peterson Two brothers get the best weekend they can imagine through the use of some very special, very wonderful powers. Rest assured, the results are BIG. Added Dec 2015 46k views 4.8 stars (19 votes) 7,666 words •Cock Growth•Huge Balls•Huge Cock•Hyper Cock•Muscle Growth•Muscle Gut•Muscle/Strength•Getting Taller•Size Increase•Incest•Brothers•Merging

Brotherly love by TheSizeKing Reece is a 20-year-old guy who has everything going for him in life: good looks, good brains, good personality, even a well-above average endowment between his legs. His younger brother, Michael, is exactly the opposite. Michael is about to turn 18, and could use a little boost before he goes out into the adult world. 5 parts Added Apr 2020 18k views 4.9 stars (18 votes) 7,816 words •Cock Growth•Huge Cock•Hyper Cock•Muscle Growth•Muscle/Strength•Getting Taller•Size Increase•Incest•Brothers •M/t

The brothers by FanTCMan Cory Callahan and his three sibs participate in a secret program, resulting in more muscles, body hair, cock size, and horniness. 8 parts Added Mar 2003 113k views 4.8 stars (94 votes) 23k words •Always Hard•Cock Growth•Huge Cock•Addiction•Straight to Gay•Muscle Growth•Muscle/Strength•Gradual Change•Getting Hairy•Incest•Brothers •t/t•M/t

Brother’s closet by Josh Dugan A handsome athletic older brother offers somewhat more than expected. Added May 2002 23k views 4.5 stars (11 votes) 962 words •Lots of Legs•Multileg•Multilimb•Replication•Detachable•Incest•Brothers•Selfcest •t/t

Bull brothers by brazboy Caio and André live together in their family farm, burdened by the loans inherited from their parents. Caio supports both of them selling his milk, but his younger brother still wants to contribute, even if he has to do it behind his elder’s back. 3 parts Added Nov 2021 Updated 27 Nov 2021 16k views 4.8 stars (12 votes) 12k words •Cock Growth•Huge Balls•Huge Cock•Hyper Cock•Cum Milking•Hyper Cum•Nipple Emissions•Hyper Muscle•Muscle Breast•Muscle Growth•Incest•Brothers •M/M

C 7

Canticle of the Fair King by brazboy A fable showing the immense wisdom of the Fair King, as he is challenged by a vile noble with a riddle which apparently has no right answers. Added Sep 2022 3,142 views 4.7 stars (3 votes) 6,693 words •Hyper Cock•Hyper Cum•Nipple Emissions•Hyper Muscle•Muscle Breast•Incest•Brothers•Twins•Restraints•Fantasy Realm •M/M•M/M/M

Christmas wish by Riu Two grown-up brothers follow their childhood tradition of waiting up for Santa. Only this time, after a few shots of special whiskey, a different kind of Christmas wish is granted. Added Dec 2016 27k views 4.8 stars (30 votes) 3,925 words •Cock Growth•Huge Cock•Hyper Cock•Straight to Gay•Muscle Growth•Muscle/Strength•Suggestion•Incest•Brothers•Christmas •M/M

The chronicles of Besar Otot by OneLuckyGuy89 On a distant unknown island near Indonesia called Besar Otot, Kenny Masters returns home a new man and intends to change his family as well. 8 parts Added Jan 2020 Updated 8 May 2021 20k views 4.0 stars (3 votes) 26k words •Cock Growth•Huge Balls•Huge Cock•Hyper Cock•Hyper Cum•Multicock•Gender Swap•Straight to Gay•Muscle Growth•Muscle/Strength•Transformation•Getting Taller•Plausible Size Difference•Size Increase•Age Progression•Getting Hairy•Age Difference•Incest•Brothers•Father/Son•Nonconsensual change•Hyper Pheromones

Cock tongue fun by lock444 Charlie’s mischievous friend Mike discovers Charlie’s brother has a magical device that turns tongues into cocks. Added Jun 2013 15k views 4.5 stars (6 votes) 2,412 words •Mouthcock•Incest•Brothers

Comeuppance by JJJJohnson No more than one tablespoon each, huh? Suuuuuure! Added May 2006 46k views 4.6 stars (21 votes) 4,071 words •Cock Growth•Huge Balls•Huge Cock•Hyper Cock•Muscle Growth•Muscle/Strength•Giants•Size Increase•Brothers•Twins

Cool bracelet, bro by BRK Shortly after acquiring a mysterious leather bracelet, Pete and his kid brother Quentin have a conversation that leads rapidly toward just how hung Pete is, and how horny that makes his brother. 6 parts Added Feb 2014 Updated 3 Jun 2023 73k views 4.5 stars (53 votes) 20k words •Always Hard•Cock Growth•Huge Balls•Huge Cock•Hyper Cock•Self-suck•Multi-abs•Multi-balls•Multicock•Multihead•Multiarm•Multileg•Multilimb•Three Legs•Multipec•Multitongue•Stacking•Muscle Growth•Muscle/Strength•Retcon•Suggestion•Incest•Brothers •M/M/M•t/t•t/t/t

The cum fairy by brazboy There are many mysteries under the sun, most of which will never be resolved—but a few can. Why do men always wake up hard? Why do they usually stop having wet dreams after a certain age? Why do some men snore, and others seem to drool in their sleep? The answer to all these questions is the cum fairy, a magical being which steals your nightly orgasms and gives you a small reward in exchange. 12 parts Added Nov 2022 Updated 17 Dec 2022 14k views 4.7 stars (22 votes) 35k words •Cock Growth•Huge Cock•Hyper Cock•Self-suck•Hyper Cum•Muscle Growth•Muscle/Strength•Public Nudity•Increased Libido•Getting Taller•Plausible Size Difference•Size Increase•Incest•Brothers•Supernatural•Flying•Invisibility•Complete •M/M

D 7

Damian and the three muscleteens by hyperboi 5 parts Added Dec 2012 57k views 4.3 stars (28 votes) 8,170 words •Cock Growth•Huge Cock•Hyper Cock•Straight to Gay•Muscle Growth•Muscle/Strength•Age Difference•Incest•Brothers•Father/Son•Twins•Infectious

Demon brand jeans by alwaysmyway Shopping for creepy Halloween costumes at the last minute is probably not a good idea. Added Aug 2012 30k views 4.6 stars (30 votes) 6,033 words •Wings•Muscle Growth•Muscle/Strength•Incest•Brothers•Halloween•Flying •M/M

Dickville by OneLuckyGuy89 Rodney Finnegan and his four boys arrive in a Florida marshland town named Dickville. And it doesn’t take them long to figure out how it got that name. 2 parts Added Apr 2022 Updated 16 Apr 2022 13k views 4.4 stars (18 votes) 5,446 words •Cock Growth•Huge Cock•Straight to Gay•Muscle Growth•Man Scent•Butt Growth•Increased Libido•Getting Handsomer•Voice Deepening•Getting Taller•Size Increase•Getting Hairy•Incest•Brothers•Father/Son •M/M•t/t

Dig’s island by BRK Shipwrecked on a remote island, four brothers grow up to be incredibly close—and that’s before they encounter a secret power on the island that transforms them each in different ways. 4 parts Added Mar 2005 26k views 4.3 stars (9 votes) 3,756 words •Cock Growth•Huge Cock•Multiarm•Wings•Muscle Growth•Muscle/Strength•Getting Taller•Size Increase•Incest•Brothers•Flying•Complete•19th Century •M/M/M/...

The djinn by hyperboi 8 parts Added Dec 2012 39k views 4.9 stars (21 votes) 14k words •Cock Growth•Huge Cock•Hyper Cock•Muscle Growth•Muscle/Strength•Incest•Brothers•Twins•Djin/Jinn/Genie

The dudes by BRK The guys at school are really susceptible to suggestion—so much so that if you tell them something’s true, it turns out that it actually is true. 7 parts Added Mar 2010 Updated 2 Mar 2016 126k views 4.7 stars (47 votes) 16k words •Always Hard•Cock Growth•Huge Balls•Huge Cock•Self-suck•Hyper Cum•Public Orgasm•Multi-abs•Straight to Gay•Muscle Growth•Muscle/Strength•Increased Libido•Getting Handsomer•Plausible Size Difference•Size Increase•Tongue Growth•Retcon•Suggestion•Brothers•Hyper Pheromones •t/t•t/t/t•t/t/t...

Dylan by TreborNawoc Dylan and his extra-laden body are always hungry, so when his friend suggests an all-you-can-eat crawl he’s immediately on board. 6 parts Added Aug 2021 Updated 4 Jun 2022 14k views 5.0 stars (181 votes) 11k words •Huge Cock•Extra Mouths•Multi-abs•Multicock•Multiarm•Multileg•Multilimb•Three Legs•Replication•Stretchy•Belly Growth•Brothers•Selfcest•Vore•Absorption•Centaurs•Naga •M/M•M/M/M

E 3

The e-journal by hyperboi Tyler’s birthday is not going well: no one can come, not even his parents, and his big brother is being an obnoxious bully as usual. Plus he’s horny as heck. At least his best friend gave him a gift: an e-journal. He decides to write in it not about the way things are, but the way he wants things to be. Added Jul 2018 19k views 4.7 stars (25 votes) 3,597 words •Cock Growth•Huge Balls•Huge Cock•Multi-balls•Multicock•Muscle Growth•Muscle/Strength•Retcon•Incest•Brothers•Nonconsensual change

Empire by LenZelig A massive consolidation of the entire “Bill’s Education” universe, incorporating the previously separately posted “The Surfer”, “The Rescue”, “Spring Break”, “Pickup Trouble”, and “School Days”, “Empire” is the wide-ranging tale of easy transformation and even easier sex across all boundaries—friends, family members, genders, even species—as a fortunate crop of humans stumble into a wider universe of size, muscle, double-digit-length cocks and much, much more and discover the true meaning of shared, radical, uninhibited pleasure. 40 parts Added Apr 2019 Updated 1 May 2021 134k views 3.7 stars (6 votes) 366k words (#1) •Cock Growth•Huge Cock•Self-suck•Straight to Gay•Muscle Growth•Muscle/Strength•Getting Taller•Size Increase•Age Difference•Bestiality•First Time/Virgin•Incest•Brothers•Father/Son•Twins•Bisexual•Hetero Sex•Nonconsensual change•Sex-Slave•Shared Body•Aliens•Space Travel•Witch/Warlock/Wizard•Thanksgiving•Mind Control•Complete

The escape by hyperboi Sam and his brother find themselves taken in their sleep and trapped in some strange warehouse-like space, along with all the other teens in their community. Not only is there no way out, but something is happening to them all... Added Dec 2014 27k views 4.7 stars (22 votes) 3,492 words •Cock Growth•Huge Cock•Hyper Cock•Self-suck•Straight to Gay•Muscle Growth•Muscle/Strength•Incest•Brothers•Twins•Nonconsensual change•Aliens

F 13

Family trouble by HandsomeLitleBoy Max starts to notice some strange behavior from his big brother Brad—behavior that involves ungodly amounts of cum. 2 parts Added Oct 2020 12k views 4.8 stars (9 votes) 2,454 words •Cock Growth•Huge Balls•Huge Cock•Hyper Cum•Muscle Growth•Getting Taller•Incest•Brothers•Twins

Family values by FanTCMan Visiting his brothers in California leads to surprise after surprise, starting with their being much bigger than they had been before... Added Jul 2014 31k views 4.0 stars (32 votes) 1,448 words •Huge Cock•Straight to Gay•Muscle Growth•Muscle/Strength•Getting Hairy•Incest•Brothers

A filling experience by Lionel E. Linklander Carlos has become victim to a cum-and-dump party.  He’s taken a bunch of small loads already when six men show up at the party with huge dongs and swelling balls.  Can Carlos take all the cum these men have, or will he explode like some cheap cum balloon?  Added Aug 2023 5,133 views 4.3 stars (4 votes) 3,019 words •Cock Growth•Huge Balls•Ball Growth•Huge Cock•Hyper Cock•Cum inflation•Hyper Cum•Immobility•Belly Growth•Size Increase•Inflation•Incest•Brothers•Humiliation•Complete •M/M/M/...

Finding Owen by BRK Owen Banks witnessed Max finding his destiny up on the mountain, then realized he was changing, too. Was he like Max, or was something else awakening within him? He decided he was going to find out. 12 parts Added Aug 2019 Updated 11 Sep 2021 28k views 4.9 stars (19 votes) 73k words (#38) •Huge Cock•Muscle Growth•Muscle/Strength•Getting Taller•Plausible Size Difference•Size Increase•Getting Hairy•Incest•Brothers•Destruction/Violence•Werebears•Werewolves•Supernatural•Complete •M/M•M/M/M

The formula by hyperboi Mike begs his genius friend Jeff to try coming up with a cock growth formula. Jeff assumes Mike doesn’t want to look too small when he goes out for the swim team, but the secret truth is, Mike’s ambitions aren’t limited to his own junk. 4 parts Added Jan 2021 Updated 13 Feb 2021 26k views 4.9 stars (32 votes) 15k words •Cock Growth•Huge Cock•Hyper Cock•Self-suck•Muscle Growth•Muscle/Strength•Age Difference•Incest•Brothers•Father/Son•Twins •t/t•t/t/t...

Four for the game by Clearlyhere Four jocks play a body changing game. Added Feb 2017 22k views 4.5 stars (20 votes) 2,962 words •Cock Growth•Cock Shrinking•Huge Cock•Muscle Growth•Muscle/Strength•Getting Handsomer•Size Increase•Incest•Brothers•Body Swap

The four jocks: College buddies by NBCK99 NBCK99 tries his hand at a "Four Jocks" story, involving four insanely hot jocks growing and changing each other as they feed each others’ attraction and arousal. Added Aug 2015 21k views 4.9 stars (19 votes) 4,873 words •Always Hard•Cock Growth•Huge Cock•Self-suck•Multicock•Multilimb•Muscle Growth•Muscle/Strength•Retcon•Incest•Brothers

The four jocks: Horny teens by hyperboi 3 parts Added Apr 2014 34k views 4.7 stars (7 votes) 7,484 words •Cock Growth•Huge Balls•Huge Cock•Hyper Cock•Nipple Emissions•Multicock•Boytaur•Four Legs•Multiarm•Replication•Muscle Growth•Muscle/Strength•Getting Taller•Size Increase•Incest•Brothers•Selfcest

The four jocks: Online edition by BRK A futuristic all-virtual version of the game leads to transformations in their already-tweaked full-body avatars, which they’re able to experience in the VR space as if they were their real bodies. 3 parts Added Jul 2012 19k views 4.6 stars (8 votes) 7,582 words •Always Hard•Cock Growth•Huge Cock•Multicock•Multilimb•Multitorso•Replication•Muscle Growth•Muscle/Strength•Mouthcock•Incest•Brothers•Selfcest•Complete •M/M•M/M/M/...

The four jocks: At the lake by BRK When Dane and his brother Sean go on a celebratory road trip after finishing college, Sean's best friends, the Fernandez twins, naturally tag along. But their trip takes a strange turn right out of the gate, not least thanks to a game the guys find in their room at the lakeside bed and breakfast. Added Jul 2017 13k views 4.5 stars (15 votes) 5,950 words •Always Hard•Cock Growth•Huge Cock•Multicock•Multiarm•Multilimb•Muscle Growth•Muscle/Strength•Suggestion•Incest•Brothers•Twins•Complete •M/M•M/M/M/...

Frank’s boyss by Multiple Authors 2 parts Added Mar 2009 18k views 3.8 stars (5 votes) 5,815 words •Huge Cock•Multicock•Multilimb•Incest•Brothers

Frat hunting by hyperboi A pair of twins with the ability to alter themselves and the world around them have some fun tailoring one of the frats to meet their needs. Added Jul 2013 30k views 4.5 stars (20 votes) 1,543 words •Cock Growth•Hyper Cock•Muscle Growth•Muscle/Strength•Suggestion•Incest•Brothers•Twins

A fucking god by Jerkoffcentral A teenager is both exasperated and incredibly turned on by how his body and everything about it seems to be getting freakier and freakier. 4 parts Added Mar 2019 Updated 8 Jul 2023 50k views 4.8 stars (41 votes) 11k words •Cock Growth•Huge Balls•Ball Growth•Huge Cock•Cum inflation•Hyper Cum•Hyper Muscle•Hyper Strength•Muscle Growth•Muscle/Strength•Muscle Worship•Gradual Change•Size Increase•Incest•Brothers •M/M

G 2

Greg and Jesse by BRK Greg and Jesse are already pretty close. But the addition of a little premium weed combined with a video chat session makes them even closer. 3 parts Added Mar 2009 Updated 5 Jan 2018 32k views 4.7 stars (26 votes) 6,991 words •Cock Growth•Huge Cock•Multicock•Multihead•Multiarm•Multileg•Multilimb•Multipec•Replication•Stacking•Brothers•Selfcest•Merging•Cannabis •t/t•t/t/t

Growing closer by Chance Micheals Spying on Luke, the object of his lust, young Gareth discovers that Luke is even more special than he thought—and then Luke’s brother shows up. Added Jun 2015 18k views 4.2 stars (20 votes) 1,018 words •Cock Growth•Huge Cock•Muscle Growth•Muscle/Strength•Incest•Brothers •M/M

H 6

The Halloween costume by frooooooo A Halloween costume you share with your brother? Might be fun. What's the worst that could happen? Added Oct 2012 19k views 4.5 stars (15 votes) 2,220 words •Incest•Brothers•Merging•Halloween •M/M

Have yourself a megalithic Christmas by Ziel A sort of sequel/follow up/spin off to “A Miracle on 69th Street”. This time the story focuses on Calvin, a down on his luck dude who has long suffered under his overbearing and outright mean-spirited older brother, but all that’s about to change. It’s Calvin’s turn to be the “big” brother in every sense of the word. Added Dec 2016 13k views 3.6 stars (7 votes) 8,115 words •Cock Growth•Huge Cock•Hyper Cock•Giants•Size Increase•Incest•Brothers•Christmas

The Henderson family reunion by EdIam The Hendersons are having a pretty standard reunion, until a seasoned mind controller with a particularly niche power decides to make it quite the life-altering occasion. Added Jul 2023 2,736 views 4.3 stars (4 votes) 13k words •Transgender•Gay to Straight•Other Mental Changes•Straight to Gay•Transformation•Incest•Brothers•Father/Son•Twins•Dom/Sub•Nonconsensual change•Hypnosis•Mind Control•Complete •M/M•M/M/M•M/M/M/...

His brother drains his manhood by Ballmeat A younger brother drains his big, strong, overconfident older brother of his cock, balls and muscle. Added Jan 2018 66k views 4.4 stars (48 votes) 2,593 words •Cock Growth•Cock Shrinking•Cock Theft•Dom to Sub•Straight to Gay•Muscle Growth•Muscle Theft•Muscle/Strength•Incest•Brothers•Dom/Sub•Humiliation•Nonconsensual change •M/M

Home for the holidays by Richard Jasper Chris Kirkpatrick, an 18-year-old high school Big Man on Campus, is eager to see his slightly older brother Roger back “home for the holidays” after his first semester as a freshman at State. Boy, is he in for a surprise! Added Dec 2020 8,939 views 5.0 stars (11 votes) 3,149 words •Cock Growth•Huge Cock•Muscle Growth•Muscle/Strength•Getting Taller•Incest•Brothers•Christmas

How it’s done by phallicphan College centaur shows his younger brother how to breed. Added Oct 2017 10k views 5.0 stars (9 votes) 4,189 words •Muscle/Strength•First Time/Virgin•Incest•Brothers•Centaurs •M/M

I 4

I think... by EdIam Larry wants to think for Zack. 12 parts Added Apr 2021 Updated 13 Aug 2022 20k views 4.2 stars (11 votes) 151k words (#6) •Other Mental Changes•Straight to Gay•Muscle/Strength•Age Difference•Incest•Brothers•Twins•Dom/Sub•Humiliation•Hypnosis•Mind Control •M/M•M/M/M

I wanna get huge by JayPat “I wanna get huge,” he said. 2 parts Added Oct 2012 61k views 4.5 stars (26 votes) 21k words •Muscle Growth•Muscle/Strength•Size Increase•Incest•Brothers•Christmas•Valentine’s Day •t/t

In The Mood by Also Known As Woody decides to try the new fad of rendered fantasy companions, wondering if there’s any way they can live up to the hype, much less his own particular fantasies.  2 parts Added Mar 2023 Updated 17 Jun 2023 8,599 views 4.6 stars (11 votes) 16k words •Cock Growth•Huge Balls•Huge Cock•Replication•Muscle Growth•Muscle Worship•Getting Taller•Plausible Size Difference•Size Increase•A.I.-Controlled Change•Incest•Brothers•Twins•Selfcest•Dildos/Toys•Set in the Future •M/M/M

Induced transformation: a brief history by BRK A father explains to his son that back in his day, they didn’t have any of these fancy-schmancy apps with built-in retcon. Back then, if you changed someone, they changed, and everyone had to just suck it up and deal with it. Added Jun 2020 13k views 4.9 stars (17 votes) 2,248 words •Cock Growth•Huge Cock•Hyper Cock•Hyper Cum•Replication•Muscle Growth•Age Regression•App•Retcon•Age Difference•Incest•Brothers•Father/Son•Selfcest•Nonconsensual change•Infectious•All Dialog•Complete •M/M•M/M/M/...

J 1

Jason’s big problem by Joven Teen athlete Jason unwittingly becomes part of a shady experiment to produce progressively larger cocks and balls that generate way too much cum. His playful and curious friends get drawn in, and when his cranky brother is roped in as well, having massive equipment becomes even more difficult. 49 parts Added Oct 2013 Updated 24 Nov 2017 207k views 4.5 stars (77 votes) 115k words (#18) •Cock Growth•Huge Balls•Ball Growth•Huge Cock•Hyper Cock•Hyper Cum•Muscle Growth•Muscle/Strength•Getting Taller•Size Increase•Incest•Brothers •t/t•t/t/t

K 1

The king’s new clothes by brazboy A tailor offers to make the king the most perfect clothes out of a fabric invisible to those who are dim of mind. The king accepts, and when he sees the outfit made for him, he decides to parade it to court and wear it to a festival in the city. Added Jul 2023 1,869 views 3.8 stars (5 votes) 2,684 words •Huge Balls•Huge Cock•Public Orgasm•Public Nudity•Incest•Brothers•Medieval(ish) •M/M

L 7

The Latin twins by RdyRoger A man is gifted by "the watchers" to make changes to himself and others that will last for 24 hours. Two of his escapades are detailed in this story. 2 parts Added Apr 2012 41k views 4.7 stars (9 votes) 7,238 words •Cock Growth•Cock Shrinking•Huge Balls•Huge Cock•Straight to Gay•Muscle Growth•Muscle/Strength•Gradual Change•Getting Taller•Size Decrease•Size Increase•Race/Ethnicity Change•Suggestion•Incest•Brothers•Dom/Sub

The list by brazboy There are two lists every college freshman wants to top: one is that of students accepted into their preferred university; the other one is just known as ‘the list’. 2 parts Added Oct 2022 5,499 views 3.8 stars (8 votes) 8,100 words •Huge Balls•Huge Cock•Hyper Cock•Hyper Cum•Public Orgasm•Muscle/Strength•Public Nudity•Plausible Size Difference•Brothers •M/M

Little bro by Ziel Hunky big bro Liam has always teased his puny kid brother Connell. But after his accident, Connell got some experimental treatments that are guaranteed to change who calls who the “little bro” from now on. Added Apr 2017 45k views 4.7 stars (18 votes) 5,382 words •Cock Growth•Huge Cock•Hyper Cock•Muscle Growth•Muscle/Strength•Giants•Size Increase•Incest•Brothers

Little brother gets big by pkak2k12 You (a muscle stud) are home alone with your 20-year-old younger brother (Joey). After a good fap in the shower you hear a crash coming from downstairs. What is he doing? Added Jul 2022 17k views 5.0 stars (13 votes) 1,596 words •Cock Growth•Huge Cock•Muscle Growth•Muscle Worship•Getting Taller•Plausible Size Difference•Size Increase•Incest•Brothers •M/M

Lockdown gym by BRK When Ed clears out his garage, his neighbor’s hunky college-age sons suggest converting the space to a lockdown gym for guys like them who want to maintain and can’t work out anywhere else. Despite the risk of distraction, Ed agrees, though the effect on his daily life turns out to be even greater than he expected. Added Apr 2021 14k views 4.7 stars (21 votes) 3,110 words •Always Hard•Cock Growth•Huge Cock•Replication•Straight to Gay•Muscle Growth•Muscle/Strength•Muscle Worship•Always Shirtless•Getting Handsomer•Gradual Change•Getting Taller•Age Difference•Incest•Brothers•Twins•Selfcest•Complete•Set during the Pandemic •M/M•M/M/M/...

The long weekend by BRK Bill thinks he’ll have the family lake house to himself for an end-of-summer four-day weekend. Unfortunately, that’s news to his cocky and annoyingly hot big brother and his two bro-hunk friends, who turned up with their own plans to hole up in the cozy lake house digs. Added Oct 2022 5,176 views 4.3 stars (4 votes) 4,149 words •Cock Shrinking•Huge Cock•Multicock•Boytaur•Four Legs•Multileg•Multilimb•Straight to Gay•Muscle Growth•Always Shirtless•Getting Taller•Retcon•Suggestion•Incest•Brothers•Nonconsensual change •M/M/M/...

Look what thinking can get you by Louis C. DePasquale After an accident on the field playing baseball, a young man gains the ability to hear thoughts—and maybe more. Added Jun 2012 20k views 4.5 stars (13 votes) 1,628 words •Muscle/Strength•First Time/Virgin•Incest•Brothers•Mind Control •t/t

M 22

Making the rules by EdIam Frank likes structure and rules in his home. Desmond likes corrupting families. Whatever could happen when the two meet? 2 parts Added Sep 2021 Updated 11 Sep 2021 7,911 views 3.8 stars (5 votes) 23k words •Other Mental Changes•Straight to Gay•Man Scent•Incest•Brothers•Father/Son•Humiliation•Nonconsensual change•Sex-Slave•Hyper Pheromones•Hypnosis•Mind Control •M/M•M/M/M

Male scent by Frank Easky Apprentice magician Sean’s potion exceeds his expectations, causing his personal musk to spread muscle growth to those who smell it. 2 parts Added Jul 2002 60k views 4.1 stars (17 votes) 14k words •Cock Growth•Huge Balls•Huge Cock•Hyper Cock•Hyper Cum•Hyper Muscle•Muscle Growth•Muscle/Strength•Man Scent•Getting Taller•Giants•Size Increase•Age Regression•Getting Hairy•Incest•Brothers•Twins•Hyper Pheromones•Infectious

Matched pairs by Jerkoffcentral Peter becomes infected, not just with growth, but with a need for more strength and size. 14 parts Added Oct 2013 Updated 22 Jun 2016 62k views 4.7 stars (32 votes) 42k words (#91) •Cock Growth•Huge Cock•Self-suck•Muscle Growth•Muscle/Strength•First Time/Virgin•Incest•Brothers•Bisexual•Hetero Sex •M/M•M/M/F

The maturing ceremony by brazboy Out of all the sacred moments in a lad’s life, none is more amazing and important than his maturing ceremony. Dinis will, led by his own older brother, find in it the chance to become an improved version of his hunkish self. Added Sep 2023 1,928 views 4.3 stars (3 votes) 3,858 words •Cock Growth•Huge Cock•Hyper Cock•Public Orgasm•Extra Mouths•Multi-abs•Multicock•Multiarm•Multileg•Multilimb•Multipec•Multitongue•Multitorso•Stacking•Muscle Growth•Transformation•Incest•Brothers•Complete •M/M/M/...•M/t

Max and Chris by Drillur Two very hung brothers get tired of solo sex. Added Jul 2014 20k views 4.6 stars (26 votes) 1,502 words •Huge Cock•Hyper Cum•Incest•Brothers

Max’s morning wood by TreborNawoc Max makes a bet with his equally gifted boytaur brother about the size of his morning wood—only it’s a bit tougher to estimate when the wood in question is meansured in feet rather than inches. Added Apr 2023 2,633 views 5.0 stars (23 votes) 1,444 words •Huge Cock•Hyper Cock•Extra Mouths•Multicock•Boytaur•Four Legs•Multiarm•Multileg•Multilimb•Incest•Brothers •M/M

Me and my big brother by Elliott Corbett Kameron experiences a magical summer with his big brother, Kyle. Added Dec 2021 4,442 views 4.8 stars (8 votes) 2,799 words •Incest•Brothers •M/M

Meta massage therapy by M.M.69 A mysterious new massage parlor opened in town, and brothers Jared and Jason have VIP passes. What makes this place so special? 3 parts Added Nov 2021 Updated 1 Jan 2022 13k views 5.0 stars (15 votes) 15k words •Always Hard•Cock Growth•Huge Balls•Huge Cock•Hyper Cock•Multicock•Multihead•Boytaur•Four Legs•Multiarm•Multileg•Multilimb•Multipec•Multitorso•Replication•Straight to Gay•Hyper Muscle•Hyper Strength•Muscle Growth•Butt Growth•Getting Handsomer•Getting Taller•Plausible Size Difference•Size Increase•Retcon•Suggestion•Age Difference•Incest•Brothers•Father/Son•Selfcest•Dom/Sub•Pagan gods •M/M

Metacafé by brazboy In a special corner of the city, unknown to most, there’s a place visited by a special crowd. Added Jun 2022 3,940 views 4.9 stars (7 votes) 5,754 words •Cock Growth•Huge Balls•Huge Cock•Hyper Cock•Hyper Cum•Nipple Emissions•Multi-abs•Multi-balls•Multicock•Four Legs•Multiarm•Multileg•Multilimb•Multipec•Stacking•Muscle Growth•Getting Taller•Size Increase•Brothers•Twins•Metabods 25 •M/M

Metachange by LordTronimator Bullied 18-year old high school student Nathan just wants to spend his time in class doodling. But he’s always mocked for what he does. So what happens when a mysterious app suddenly shows up on his phone and promises to change things? 5 parts Added May 2020 Updated 13 Jun 2020 11k views 4.6 stars (11 votes) 8,689 words •Cock Growth•Huge Balls•Huge Cock•Hyper Cock•Hyper Cum•Four Legs•Multiarm•Multileg•Multilimb•App•Incest•Brothers•Humiliation•Nonconsensual change •t/t

The meteor shower by AGammer When the meteor shower hits his farm, it has an unexpected effect on the teenaged, and very horny, William: a gift of changing himself and, as it turns out, his equally horny brother. 2 parts Added Jan 2013 14k views 3.8 stars (6 votes) 2,738 words •Cock Growth•Huge Cock•Multicock•Multihead•Incest•Brothers

Michael and jim by Your Name Here Added Jul 2006 23k views 2.9 stars (7 votes) 1,317 words •Cock Growth•Huge Cock•Muscle Growth•Muscle/Strength•Getting Hairy•Incest•Brothers

Mind and body by BRK Jack discovers that his knack for hypnosis is actually much more powerful than it should be. Naturally, he uses this to get the upper hand with his sexy jock brother, but that turns out to be a lot more complicated than he’d thought. 16 parts Added Jun 2012 Updated 28 Jul 2017 158k views 4.7 stars (103 votes) 66k words (#45) •Always Hard•Cock Growth•Huge Cock•Multicock•Straight to Gay•Muscle Growth•Muscle/Strength•Always Shirtless•Getting Taller•Size Increase•App•Suggestion•Incest•Brothers•Hypnosis•Mind Control •t/t•t/t/t•t/t/t...

Misdirected by BRK Ben doesn’t realize at first exactly why his annoying older brother’s secret rituals to make himself bigger and stronger are going wrong, only that he feels pretty strange himself lately. 6 parts Added Oct 2009 36k views 4.8 stars (20 votes) 5,664 words •Always Hard•Cock Growth•Huge Cock•Self-suck•Size Increase•Incest•Brothers

Mountainheart by BRK It’s 1999, and Glenn, until now kept from his heritage, uncovers what it means to be a Sheridan. Fortunately, he has his closest friend, Eamon, at his side. 13 parts Added Nov 2021 Updated 18 Nov 2023 21k views 4.9 stars (27 votes) 67k words (#44) •Cock Growth•Huge Balls•Huge Cock•Muscle Growth•Muscle/Strength•Always Shirtless•Increased Libido•Gradual Change•Getting Taller•Plausible Size Difference•Size Increase•Age Regression•Getting Hairy•Age Difference•First Time/Virgin•Incest•Brothers•Father/Son•Anthro/Furry•Werebears•Werewolves•Supernatural•Shapeshifting•Complete•Alcohol •M/M

Mr. Rainbow Hair by iHeywood In this one-shot story, the lead singer of a gay pop/punk band meets a twink at a concert. They end up fucking. Added Sep 2022 3,106 views 4.5 stars (11 votes) 3,220 words •Huge Balls•Huge Cock•Hyper Cock•Nipple Emissions•Incest•Brothers•Twins •M/M•M/M/M

Musclove, Texas by Max Mann Moving to Musclove, Texas with his sons to take up a new teaching position, Rick Long is startled to find a town full of huge, hung, and horny men, all of them eager to have the newcomers join them (in more ways than one). 9 parts Added Sep 2004 72k views 4.8 stars (50 votes) 26k words •Cock Growth•Hyper Cock•Hyper Cum•Muscle Growth•Muscle/Strength•Age Difference•First Time/Virgin•Incest•Brothers•Father/Son•Twins•Restraints

My brother was a teenage muscle freak! by Pump Culture This is a story of how my muscle fetish first got started and how my brother turned himself into a true muscle freak. Added Nov 2020 13k views 4.6 stars (8 votes) 3,084 words •Muscle Growth•Muscle/Strength•Incest•Brothers

My brother’s boyfriend by Richard Jasper Hunky, straight Marine Kyle is gobsmacked to find out that his bigger, hotter baby brother has an even bigger, hotter boyfriend! 5 parts Added Feb 2020 19k views 4.2 stars (13 votes) 8,843 words •Huge Balls•Straight to Gay•Hyper Muscle•Hyper Strength•Muscle Growth•Muscle/Strength•Getting Taller•Size Increase•Incest•Brothers•Hyper Pheromones

My brother’s closet by brazboy Lauro has a secret: he has a huge crush on his big brother! But his big brother also has a secret, one he keeps deeply locked in his heart... and in his closet. 2 parts Added Apr 2023 Updated 29 Apr 2023 7,569 views 4.8 stars (18 votes) 11k words •Cock Growth•Huge Cock•Hyper Cock•Nipcocks•Hyper Cum•Nipple Emissions•Extra Mouths•Multi-abs•Multicock•Four Legs•Multiarm•Multileg•Multilimb•Multipec•Multitongue•Stacking•Muscle Growth•Muscle/Strength•Man Scent•Detachable•Getting Taller•Plausible Size Difference•Size Increase•Hyper Tongue•Tongue Growth•Mouthcock•Incest•Brothers •M/M

My roommate (complete) by LenZelig Bill’s hot adventures with his irresistible sex-god of a roommate, Andy Wang, and the others drawn into his adventures, combined with the stories of Andy’s son and his friends. (This revised and updated compilation version includes both “My Roommate” and “My Roommate: The Next Generation.”) 29 parts Added Jul 2002 Updated 19 Jun 2021 158k views 4.5 stars (25 votes) 223k words (#3) •Cock Growth•Huge Cock•Muscle Growth•Muscle/Strength•Age Difference•First Time/Virgin•Incest•Brothers•Father/Son•Bisexual•Hetero Sex•Dom/Sub•Witch/Warlock/Wizard•Gay Pride•Mind Control•Complete •M/M•M/M/M•M/M/M/...•t/t•M/t•M/F•M/M/F

My roommate’s soft spot by brazboy Guilherme’s tall, handsome, and muscular roommate seems like the perfect guy, but he has a big secret that not everyone can really accept—not even himself. 5 parts Added Jul 2021 Updated 31 Jul 2021 7,333 views 4.9 stars (7 votes) 14k words •Huge Cock•Multicock•Mouthcock•Incest•Brothers

N 9

Naked morph for ps2 by Male Enhancer Three brothers play a video game that has a direct effect on the people playing it. 4 parts Added Jun 2013 34k views 4.6 stars (29 votes) 3,180 words •Cock Growth•Huge Cock•Muscle Growth•Muscle/Strength•Size Increase•Incest•Brothers

Necklace brothers by Levitate A pair of undersized twins use a magical necklace to grow themselves—not realizing that the growth came with a price. Added May 2015 21k views 3.0 stars (5 votes) 1,423 words •Muscle Growth•Muscle/Strength•Size Decrease•Size Increase•Incest•Brothers•Twins

The new job by hyperboi Out-of-work engineer Jake takes a job at an isolated mansion, where he’s overpaid for just guarding a gate and letting through mysterious trucks. He and his coworkers are getting slowly bigger and hornier, too, and all this seems really great except for a certain nagging doubt—and a terrifying warning from the hugest of his fellow guards. 8 parts Added Aug 2014 38k views 4.6 stars (41 votes) 20k words •Always Hard•Cock Growth•Huge Cock•Hyper Cock•Hyper Muscle•Muscle Growth•Muscle/Strength•Gradual Change•Size Increase•Incest•Brothers •M/M

The new simulation game by hyperboi On a weekend home from college, while he’s waiting for his brother to come home (and avoiding his hateful dad and sneering stepmom), muscle nerd Simon screws around with a new sim game he’d lucked into beta-testing—a game that turns out to be a lot more realistic than he’d expected. 5 parts Added Mar 2016 29k views 4.8 stars (24 votes) 10k words •Cock Growth•Cockfucking•Huge Cock•Hyper Cock•Straight to Gay•Muscle Growth•Muscle/Strength•Incest•Brothers

Nick by Anonymous Added Apr 2003 23k views 4.5 stars (4 votes) 1,846 words •Huge Cock•Incest•Brothers

No angels by BRK Jerry likes his job covering the front desk alone overnight at a nice hotel, especially when a handsome customer checks in and piques his imagination. Added Oct 2023 2,323 views 4.5 stars (6 votes) 5,202 words •Cock Growth•Huge Balls•Ball Growth•Huge Cock•Hyper Cock•Multicock•Multileg•Multilimb•Three Legs•Muscle Growth•Getting Taller•Plausible Size Difference•Getting Hairy•Retcon•Incest•Brothers•Twins•Nonconsensual change•Invisibility•Complete •M/M

No strings attached by muscl4life Donny walks in on his roommate, Sebastian, in the midst of his efforts to make himself bigger. 3 parts Added May 2014 52k views 4.5 stars (24 votes) 39k words (#95) •Cock Growth•Huge Cock•Hyper Cock•Cum inflation•Muscle Growth•Muscle/Strength•Size Increase•Incest•Brothers•Twins•Hypnosis •M/M

Noel’s literary gift by brazboy Luciano’s flatmate Noel decides to give him a special Christmas present: a notebook that guarantees that everything written in it is true. The notebook is as powerful as it sounds, although it also seems to be affected by Luciano’s desires and perhaps its own innate mischievousness, creating a snowball effect that twists the entire world.  3 parts Added Dec 2022 7,722 views 4.6 stars (16 votes) 12k words •Cock Growth•Cockfucking•Huge Balls•Ball Growth•Huge Cock•Hyper Cock•Nipcocks•Self-suck•Hyper Cum•Nipple Emissions•Public Orgasm•Multi-abs•Multi-balls•Multicock•Four Legs•Multiarm•Multileg•Multilimb•Multipec•Multitongue•Stacking•Straight to Gay•Muscle Growth•Public Nudity•Getting Handsomer•Voice Deepening•Getting Taller•Plausible Size Difference•Size Increase•Age Regression•Hyper Tongue•Tongue Growth•Retcon•Incest•Brothers•Christmas•Complete •M/M•M/M/M

Nothing better than Monday oatmeal by Mask Spencer would love nothing more than to live out his idyllic life while caring for his two perfect older sons. His days are always the same, except for his devilish youngest child who always seems to be causing issues for the household. 7 parts Added Jun 2023 Updated 17 Jun 2023 7,249 views 4.6 stars (19 votes) 21k words •Always Hard•Multi-abs•Multicock•Multihead•Four Legs•Lots of Legs•Multiarm•Multileg•Multilimb•Multitorso•Replication•Other Mental Changes•Straight to Gay•Muscle Growth•Muscle/Strength•Always Shirtless•Public Nudity•Transformation•Getting Taller•Giants•Size Increase•App•Retcon•Incest•Brothers•Selfcest•Complete •M•M/M•M/M/M•M/M/M/...

O 3

One hot summer by BRK Brandon and Eddie enjoy working for their pot-loving boss, Mike, at the pizza place near campus and are bummed they can’t stick around for the summer, too. Mike offers them a possible solution, though he doesn’t let them in on all his plans for the coming summer. 54 parts Added Jun 2019 Updated 25 Jun 2022 69k views 4.9 stars (54 votes) 119k words (#17) •Always Hard•Cock Growth•Huge Cock•Self-suck•Replication•Other Mental Changes•Muscle Growth•Muscle/Strength•Always Shirtless•Increased Libido•Gradual Change•Voice Deepening•Getting Taller•Giants•Plausible Size Difference•Size Decrease•Size Increase•Getting Hairy•Incest•Brothers•Twins•Selfcest•Nonconsensual change•Body Swap•Shared Body•Fourth of July•Gay Pride•Complete•Cannabis •M•M/M•M/M/M•M/M/M/...

Opportunities and escalations by BRK Brothers Coren and Pranam are diverted from their usual slightly roguish pursuits by an accidental teleport to a highly secure space station. Facing potentially dire accusations, Coren’s pilfering skills put them in possession of a device that might just alter the balance of things—and give Coren a chance to indulge in a bit of mischief aimed at his attention-loving brother. Added Apr 2023 1,959 views 2,564 words •Cock Growth•Huge Cock•Replication•Public Nudity•Mouthcock•Incest•Brothers•Selfcest•Nonconsensual change•Space Travel•April Fool’s Day •M/M

Overshadowed by Cris Kane Jealous of his jock older brother, gay misfit Lance gets a magical chance to change things. Added Apr 2019 8,077 views 2.6 stars (7 votes) 2,658 words •Other Mental Changes•Straight to Gay•Transformation•Incest•Brothers

P 5

Perfectly normal by EdIam John is working on reality-bending science… but perhaps he should vet his employees a little more carefully. Added Jan 2021 7,675 views 4.5 stars (14 votes) 8,364 words •Always Hard•Other Mental Changes•Straight to Gay•Always Shirtless•Retcon•Incest•Brothers•Father/Son•Nonconsensual change

The Porter Men by Inclytos The Porters are a family of perfect men, all uniquely perfect in their own way. It’s how it’s always been, right? 3 parts Added Oct 2022 Updated 5 Nov 2022 12k views 4.7 stars (22 votes) 8,809 words •Cock Growth•Cock Shrinking•Huge Cock•Dom to Sub•Getting Dumber•Pec Fucking•Hyper Strength•Muscle Breast•Muscle Growth•Muscle/Strength•Always Shirtless•Butt Growth•Increased Libido•Retcon•Incest•Brothers•Father/Son•Twins•Dom/Sub•Sex-Slave •M/M•t/t•M/t

The power of suggestion by BRK On a long bus trip, Jordan can't help using his ability to suggest physical changes on his handsome seatmate, but things soon get out of hand. Added Feb 2009 46k views 4.8 stars (37 votes) 1,878 words •Cock Growth•Huge Cock•Multicock•Replication•Muscle Growth•Muscle/Strength•Size Increase•Retcon•Suggestion•Incest•Brothers•Twins•Selfcest•Complete

The power of suggestion: Wetbar by BRK A night out at the bar leads to a series of changes to a very happy young clubgoer. Added Feb 2009 26k views 4.9 stars (12 votes) 2,751 words •Cock Growth•Huge Balls•Huge Cock•Hyper Cum•Public Orgasm•Multi-abs•Multicock•Replication•Other Mental Changes•Muscle Growth•Muscle/Strength•Increased Libido•Getting Handsomer•Transformation•Plausible Size Difference•Size Increase•Age Regression•Mouthcock•Retcon•Suggestion•Brothers•Twins•Selfcest•Complete •M/M/M

Princely duel by brazboy Haakon, First Prince of Niege, and Jarl, First Prince of Sneuve, have an escalating rivalry which is rocking all the Court of Lads. The ruler and master of the Court of Lads, amazing hunk Karl of Grenania, however, has a deep understanding of the situation and commands a solution a final settlement between the overmuscled twunks: a naked duel, in front of all the nobility. Added Sep 2023 1,493 views 6,591 words •Huge Cock•Hyper Cock•Hyper Cum•Public Orgasm•Muscle/Strength•Plausible Size Difference•Incest•Brothers •M/M

R 3

Reality Pack by Thorn What happens when the program you’re working on for school has a downloadable mod? You investigate it of course! 15 parts Added Nov 2020 Updated 27 Feb 2021 53k views 4.9 stars (40 votes) 79k words (#34) •Cock Growth•Huge Cock•Pec Fucking•Muscle Breast•Muscle Growth•Muscle/Strength•Butt Growth•Belly Growth•Gradual Change•Getting Taller•Plausible Size Difference•Getting Hairy•App•Age Difference•First Time/Virgin•Incest•Brothers•Father/Son•Valentine’s Day •M/M•M/M/M

The Red Prince by brazboy Out of a weird arrangement a cursed prince is born, one who has an uncontrollable appetite for human flesh. As his unabated hunger leads him to consume more and more men, he transforms, gaining the body of a gigantic marvelously muscular giant. Who can stop him, and what will be the consequences of trying? 2 parts Added Aug 2023 3,463 views 4.6 stars (10 votes) 8,773 words •Cock Growth•Huge Balls•Huge Cock•Hyper Cock•Hyper Cum•Nipple Emissions•Extra Mouths•Multi-abs•Multi-balls•Multicock•Boytaur•Multiarm•Multileg•Multilimb•Multipec•Multitongue•Stacking•Hyper Muscle•Immobility•Muscle Growth•Gradual Change•Male Pregnancy•Transformation•Size Increase•Hyper Tongue•Tongue Growth•Incest•Brothers•Hetero Sex•Destruction/Violence•Blood•Nonconsensual change•Nonconsensual sex•Vore•Complete•Medieval(ish) •M/M•M/M/M/...•M/M/F

The runner by LenZelig Jake is out for a morning run when he meets up with someone who is more than a man and looking for a different kind of exercise. Added Jun 2020 9,434 views 4.8 stars (4 votes) 8,270 words •Huge Cock•Straight to Gay•Muscle/Strength•Suggestion•Age Difference•Incest•Brothers•Father/Son•Bisexual•Hetero Sex•Dom/Sub

S 11

The salt by RdyRoger Trav gets his hands on some salts that cause all kinds of sexy growth and transformation. Using them on himself is great, but growing other people without their realizing it is even more fun. 9 parts Added Jun 2010 85k views 4.8 stars (21 votes) 36k words •Cock Growth•Huge Cock•Muscle Growth•Muscle/Strength•Muscle Worship•Increased Libido•Gradual Change•Getting Taller•Size Increase•Tongue Growth•Incest•Brothers

Say cheese and grow by hyperboi When Greg and his friends take a picture of themselves using a creepy camera, the resulting image shows them wildly transformed in different ways. They just think it’s a weird glitch, until it slowly starts becoming true. 13 parts Added Nov 2013 41k views 4.7 stars (25 votes) 29k words •Cock Growth•Huge Cock•Self-suck•Muscle Growth•Muscle/Strength•Gradual Change•Incest•Brothers •t/t•t/t/t

Secret Santa by BRK Joe’s crew at his new firehouse are destined to become very important to him, but the extent to which he’s more and more heart-thuddingly attracted to his handsome, well-muscled workmates worries him more than a little. 3 parts Added Dec 2016 16k views 5.0 stars (13 votes) 15k words •Cock Growth•Huge Cock•Multi-abs•Multiarm•Multileg•Multilimb•Three Legs•Replication•Muscle Growth•Muscle/Strength•Always Shirtless•Incest•Brothers•Selfcest•Christmas•Complete •M/M•M/M/M/...

Sensational summer growth by OneLuckyGuy89 Todd and Aaron return home to their hometown of Portland as changed men. Now it’s time for them to change the rest of the town. 3 parts Added Apr 2022 Updated 7 May 2022 14k views 5.0 stars (3 votes) 8,409 words •Cock Growth•Multicock•Straight to Gay•Muscle Growth•Man Scent•Butt Growth•Getting Handsomer•Voice Deepening•Getting Taller•Getting Hairy•Age Difference•Incest•Brothers•Father/Son •M/M•M/M/M

17 inches by Unknown Added Mar 2009 86k views 4.4 stars (22 votes) 3,639 words •Huge Cock•First Time/Virgin•Incest•Brothers

The shirtless club by BRK A cute, well-built teenager and his twin friends make a pact to keep their shirts off at all costs. 2 parts Added Jul 1997 37k views 4.6 stars (14 votes) 7,614 words •Huge Cock•Self-suck•Muscle/Strength•Always Shirtless•First Time/Virgin•Incest•Brothers•Twins•Complete •t/t•t/t/t...

Sizemorph by ChangeRedhawk Added Mar 2003 19k views 3.7 stars (7 votes) 1,235 words •Cock Growth•Huge Cock•Muscle Growth•Muscle/Strength•Incest•Brothers•Nonconsensual sex

The smuggler by BRK Ardin is one of the best smugglers in the Seven Realms, and the heist he has planned to steal a valuable heirloom from the unsuspecting (and impossibly handsome) Prince of Kossh should be a piece of cake. What he’s not counting on is finding something else in the Prince’s treasure-room: an artifact evoking a mythical cock-themed beast that brings with it a sexual need so intense Ardin is unsure it can ever be quenched. 2 parts Added Apr 2021 4,017 views 4.7 stars (6 votes) 6,395 words •Huge Cock•Hyper Cum•Man Scent•Incest•Brothers•Twins•Fantasy Realm

Snow in the North Pole by iHeywood Snow doesn't know what to do with his life after barely graduating high school. Maybe Santa will have an idea. Added Dec 2022 2,177 views 4.3 stars (6 votes) 1,255 words •Huge Cock•Incest•Brothers•Father/Son•Christmas •M/M•M/M/M

The spectacular growing saga by West A collection of brief stories about guys discovering their dream bodies in various ways. 8 parts Added Mar 2022 Updated 20 May 2023 17k views 4.6 stars (15 votes) 12k words •Cock Growth•Cut to Uncut•Cock Shrinking•Huge Balls•Ball Growth•Huge Cock•Hyper Cock•Prehensile Cock•Cum inflation•Hyper Cum•Nipple Emissions•Multi-abs•Multi-balls•Multicock•Multiarm•Multipec•Hyper Muscle•Hyper Strength•Muscle Growth•Muscle Theft•Muscle/Strength•Increased Libido•Getting Taller•Forced Growth•Size Decrease•Size Increase•A.I.-Controlled Change•Retcon•Suggestion•Incest•Brothers•Twins•Triplets•Hyper Pheromones•Infectious•Androids/Cyborgs •M/M•M/M/M

The stolen stash by BRK Brothers Ron and Don break into a certain house normally occupied by a couple of pizza hunks and their friends, just for fun—and then things take an interesting turn when they find the occupants’ massive stash of highly unusual cannabis. Added Feb 2023 2,396 views 4.5 stars (2 votes) 2,601 words •Cock Growth•Multicock•Multiarm•Multileg•Multilimb•Three Legs•Transformation•Incest•Brothers•Twins•Shared Body•Complete•Cannabis •M/M

T 10

A Tale of Two Brothers: Donnie & Marco by Artotter92 Two brothers end up the unwilling subjects of their father’s science experiments, with some pretty extreme results. Added Jan 2023 9,334 views 4.1 stars (13 votes) 3,937 words •Cock Growth•Huge Balls•Ball Growth•Huge Cock•Hyper Muscle•Muscle Breast•Muscle Growth•Muscle/Strength•Butt Growth•Increased Libido•Gradual Change•Transformation•Voice Deepening•Forced Growth•Size Increase•Age Progression•Getting Hairy•Incest•Brothers•Stories with Images •M/M

Ten ways to get big and strong by BRK Cam and his band-geek buddies have a good laugh at a silly new poster in the gym listing ten ways to get big and strong, but when they sneak in after school and start writing in their own suggestions, things start to get a little weird. 4 parts Added Jun 2016 Updated 2 Sep 2016 26k views 4.8 stars (21 votes) 13k words •Cock Growth•Huge Cock•Muscle Growth•Muscle/Strength•Size Increase•Incest•Brothers •M/M•M/M/M

They came from outer space by WordShop Playing with meteors can have strange side effects. Two young brothers living near a military base find themselves changing from exposure to meteorite dust. 4 parts Added Oct 2017 Updated 24 Nov 2017 23k views 4.9 stars (21 votes) 13k words •Cock Growth•Plants•Brothers •M/M

Three brothers by Wawa Three brothers get infected with a digital virus that grows them to their true selves. Added May 2022 12k views 3.8 stars (4 votes) 1,702 words •Cock Growth•Huge Balls•Huge Cock•Hyper Cock•Hyper Cum•Pec Fucking•Muscle Breast•Muscle Growth•Muscle Gut•Belly Growth•Giants•Size Increase•Getting Fatter•Incest•Brothers•Nonconsensual change •M/M•M/M/M

Three-legged bros by BRK Matteo’s stream-of-consciousness account of how, basically, the only thing hotter than having three legs is having an insanely hot brother with three legs. Added May 2020 5,026 views 4.9 stars (7 votes) 3,562 words •Multi-abs•Multicock•Multileg•Multilimb•Three Legs•Incest•Brothers•Complete

To a tee by Cris Kane Teddy is amazed to see how much his older brother has grown since going away to college. Added Dec 2019 10k views 4.8 stars (5 votes) 2,189 words •Cock Growth•Huge Cock•Muscle Growth•Muscle/Strength•Transformation•Getting Taller•Incest•Brothers

Touch by BRK Kevin goes to college where his gift for making guys he likes willing to casually touch him seems to intensify just as he’s moving in with his hunky older brother. 5 parts Added Mar 2019 Updated 10 Aug 2019 24k views 4.8 stars (36 votes) 31k words •Huge Cock•Other Mental Changes•Muscle/Strength•Always Shirtless•Incest•Brothers•Complete •M/M•M/M/M

Twin studs by Anonymous 3 parts Added Jul 2014 18k views 4.1 stars (23 votes) 43k words (#87) •Huge Cock•Multicock•Multiarm•Multilimb•Age Difference•First Time/Virgin•Incest•Brothers•Father/Son•Twins

Twin workout by pkak2k12 Mr. Average Charlie joins the gym only to find the only other early customers are Hank, the strong silent hunk from class and his twink twin, Jamie. Which will Charlie go for—Hank, Jamie, or both? 5 parts Added Nov 2022 Updated 7 Jan 2023 6,098 views 4.5 stars (8 votes) 6,612 words •Huge Cock•Muscle/Strength•Incest•Brothers•Twins•Complete •M/M/M

Two brothers by Richard Jasper Will and Chris are brothers, four years and one week apart. They’ve always been close but then Will persuades his parents to buy him a weight set and their true love—muscle—is unleashed! This story has two endings, “No, They Don’t” and “Yes, They Do” (make of that what you will!). 7 parts Added Oct 2020 6,278 views 5.0 stars (2 votes) 7,269 words •Muscle Growth•Muscle/Strength•Gradual Change•Incest•Brothers

U 1

An unexpected inflation by UberPump A college athlete named Keith and his friends discover what it feels like to enlarge their cock and balls with the mysterious device Keith ordered off the dark web. When things go awry, however, their packages get huge. Keith and his friends go on a massive journey of cock growth, bloated balls, and near exploding junk as they inflate their man parts to their absolute limit. 41 parts Added Apr 2020 Updated 10 Jun 2023 123k views 4.9 stars (60 votes) 99k words (#24) •Cock Growth•Cock Pumping•Cockfucking•Huge Balls•Ball Growth•Huge Cock•Hyper Cock•Cum inflation•Cum Milking•Hyper Cum•Public Orgasm•Addiction•Straight to Gay•Hyper Muscle•Pec Fucking•Immobility•Muscle Growth•Muscle/Strength•Public Nudity•Increased Libido•Breast Expansion•Getting Handsomer•Voice Deepening•Getting Taller•Forced Growth•Size Increase•Inflation•App•Nanotech•Incest•Brothers•Bisexual•Hetero Sex•Nonconsensual change•Bodily Fluids•Dildos/Toys•Infectious •M/M•M/M/M•M/M/F

V 1

Vivid by BRK Alex sees a new neighbor moving in and lets his imagination build him up to new levels of sexiness. Added Nov 2022 5,502 views 4.9 stars (8 votes) 3,576 words •Cock Growth•Huge Balls•Huge Cock•Hyper Cock•Multi-abs•Multicock•Multiarm•Multileg•Multilimb•Three Legs•Muscle Growth•Muscle/Strength•Getting Handsomer•Gradual Change•Getting Taller•Plausible Size Difference•Mouthcock•Incest•Brothers•Triplets•Complete •M/M•M/M/M/...

W 3

What a dear deer boy by Thatbadwriter Eric’s undersized brother Jayden finally hits his growth spurt—then keeps hitting it. 5 parts Added Feb 2021 Updated 13 Mar 2021 24k views 5.0 stars (18 votes) 12k words •Cock Growth•Huge Balls•Huge Cock•Hyper Cock•Hyper Cum•Butt Growth•Giants•Plausible Size Difference•Size Increase•Human to Animal/Anthro•First Time/Virgin•Incest•Brothers•Hyper Pheromones•Anthro/Furry •M/M

The Wizard of Hot by hyperboi A young man’s difficult life on a struggling Kansas farm takes a sudden turn when a cyclone appears, taking him and his brother far from home to another place altogether. 10 parts Added Apr 2021 Updated 31 Jul 2021 18k views 4.6 stars (16 votes) 39k words (#96) •Cock Growth•Huge Balls•Huge Cock•Hyper Cock•Hyper Cum•Multicock•Multiarm•Multileg•Multilimb•Three Legs•Muscle/Strength•Detachable•Giants•Plausible Size Difference•Size Increase•Incest•Brothers•Anthro/Furry•Witch/Warlock/Wizard•Fantasy Realm•Supernatural •M/M/M•t/t

Woody by BRK Woody’s been searching for his other half, but he doesn’t realize quite what that means, or what changes will happen when they meet. 2 parts Added Aug 2013 15k views 3.8 stars (4 votes) 4,705 words •Always Hard•Multicock•Size Increase•Incest•Brothers•Twins