Hyper Muscle Growth Stories

54,443 results
Orientation
Length
Source
Infinite Scroll

Runt of the Litter

by grimbous on Oct 9, 2017
Transsexual

(This story involves a lot of humiliation of the main character, futa on male action, incest, and other fringe fetishes. If these aren't your thing turn back now. I also wanted to give credit and thanks to the artist Mafen for the above picture which helped inspire this story.) The hall is quiet. You were pretty sure nobody was at home. You creep carefully d...

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Hollene - A Day at the Beach

by neolim on Oct 6, 2020
Fetish

Holly planned on spending the day with Maria, but life got in the way and Maria had to take care of a ton of paperwork at city hall after Holly's last sex adventure. Holly didn't mind going herself but after her last visit there, the mayor of Titania issued a restraining order preventing Holly from visiting there again. Feeling her body needing some additio...

Stories of changing sizes, growing bigger or shrinking smaller

by masterfulmastus on Dec 20, 2020
Fetish

This is a branching series with a focus on transformations or size changes in stories. Predominantly growing and expanding in some way, but also including shrinking, size draining, size transfer, and any other size play related fun. Size changes can happen any number of ways depending on the path you choose and who is growing and changing. Random growth spur...

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Only Good Boys...

by mistyfdfa on Mar 7, 2018
Transsexuals & Crossdressers

A Busty, Buff, and Hung story exploring an open d/s relationship between a brawny guy who becomes the sub of a much smaller woman, only to soon find himself dating an altersex superwoman after an unspecified event grants her the ability to "drain or convey virility." So, if size difference, hypersexual altersex/male pairings with a masculine bottom, women...

Mo' and Mo' Mimi

by dongstar on Jan 15, 2019
Transgender & Crossdressers

"Oh no! Please don't let me miss this train!" Mimi prayed as she sprinted the last few yards toward the special traincar reserved for students of Hyper Academy. Her monstrously oversized cock bobbed comically back and forth, slapping her across the face with each step. The colossal member protruded a full eighteen inches from Mimi's cleavage and was nearly a...

Sin City

by Ghosthand on Mar 2, 2020
Mature

The year is 2245. Over the course of humanity we have changed so much. From bands of scavengers, to tribes, to communities, to cities, to states, to countries, to the world government. The stone age gave way to the bronze age, the iron age, the steel revolution, the technology age, the fusion age, the antimatter age. We now have a full colony on the moon and...

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Lost Empire Ch. 02

by Pars001 on Sep 13, 2017
Non-Erotic

The cold and unforgiving dark of space can be a hard mistress when searching for something. It had been two weeks now and Derrick was no closer to finding more of the A.I. brain boxes than when he started looking with E. Having extrapolated the exact position of the last battle and moving from there (not where they found 0999), Derrick thought it would have...

Size Matters

by idahoboy on May 5, 2015
Science Fiction

Adam rushed into his room after school. His dick was already straining in his pants. It seemed like it was getting harder and harder to make it through a day of school without jerking off. The young man had taken to blowing a load in the toilet at lunch. Today, he couldn't find an empty stall before the bell rang. The boy dropped his pants wrapped his hand a...

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A Almost Perfect Awakening Ch. 12

by Wm_Sexspear on Sep 25, 2017
Erotic Couplings

* * * WARNING * * * All the actors in this script are of legal age, but may portray maturing young adults. This is a work of adult fiction and contains descriptions of sexual acts between consenting adults. If you're under the age of consent where you reside, delete this file immediately. If it is illegal to obtain adult literature where you reside, delete...

Futanari House Party

by UltimateMate on Sep 19, 2017
Fetish

WARNING TO READERS: This fic includes wild amounts of hyper dickgirl action, complete with insane levels of dirty talk. I suggest you take this as word of caution before reading. If it's too much, then don't say I didn't warn you. ***** "So, what are we doing here again?" Pam asked. Pam, Stacy and Hilary were all sitting on Stacey's living room couch donn...