Male Muscle Growth Stories

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Dick World

by darkness_drearing on Dec 25, 2019
Bisexual

For contributors As was stated at the top: while there were will be two general threads to go off of (for a guy and girl), feel free to create your own characters or scenarios. The only shared premise among them needs to be that they find themselves, however you decide that happens, in this universe and, as The Eagles would say, "You can check out any t...

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IrreFutable Changes

by D0Wh4tever on Aug 17, 2020
Fetish

In the medical world, it got called the Hormone-Oriented Sexual Transmutative Disease. The disease was transmittable through sexual activity and, as its symptoms and causes became more well-known, it got classified as an STD (Sexually Transmitted Disease) very quickly. Many people were fearful of the disease. They were never sure if they'd catch it, nor how...

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A New World Pt. 01 - Preface

by Newworldfuta on Nov 4, 2019
Fetish

Preface: ( I have a few stories in mind that i will be writing. This preface is an explanation of the universe/ world/ timeline that they occur. While its not entirely necessary to the reader to read this before or after reading any of my stories, it is helpful to me to establish and maintain continuity etc. ) The year is 2040, the world is a different pla...

Male Homo Erectis Virus

by Bh12 on Apr 22, 2025

The Homo Erectis Virus started off in a research laboratory, originally meant to increase a males’ musculature, stamina, and longevity. The virus cells came from HIV, as it is a retrovirus that has RNA as its genomic material, and converts it into DNA strands which can be inserted into the DNA strand. The DNA also contains the instructions to make more retro...

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Stallion Treatment Ch. 01

by Buffwriter on Sep 14, 2017
Sci-Fi & Fantasy

Just a little larger "Maybe 23 cm," I said, "just long enough to fill me completely full and grind on my clit. And a little bit bigger around, 15 cm?" Nathan looked down at the gift certificate to Body Mods he had pulled out of the envelope, then looked back up at me. "You never complained before." "Oh, Sweetie, I'm not complaining. You're very big for a...

See Label for Instructions

by ash_rigby on Oct 12, 2020
NonHuman

This is a weird one, guys. But that's just what we do around here on this account! Anyway, this is a male solo scene involving extreme cock growth and the alien also ends up fucking himself with his tail. This is your last chance to turn around if that isn't your thing! Thank you and enjoy! ~*~ Flyx's recently-polished horns glinted in the bathroom light....

Side Effects Ch. 01

by grgy56 on Sep 5, 2018
Transsexuals & Crossdressers

I was never what anyone would refer to as the typical male. Standing only five foot five and weighing only 130 pounds, no one would ever use me in a he-man advertisement. I wasn't scrawny; my body was well formed with some muscle in my chest and legs. My physique hasn't really changed at all since I was 15. Getting girls in school was not the easiest since t...

A Love High in Protein

by mistyfdfa on Sep 16, 2017
Sci-Fi & Fantasy

Warning: this massive, sexually explicit story, featuring a couple consisting of a huge, burly guy and a petite, willowy size queen, is about her achieving her dream of somehow growing larger to the point that she out grows him in every way imaginable. If things like a size difference fetish, muscles growing on both men and women, a woman becoming altersex,...

Rebirth of the Beyonders Ch. 02

by Silenteye on Sep 17, 2017
Celebrities & Fan Fiction

As I mentioned before this story is more of a plot and action story than sex but there will be plenty of sex. This a scene more of plot and to identify who the beyonders are, what they do, and their goal. Enjoy! Mass Effect: Rebirth of the Beyonders Tags include: Transformation, Excessive Size, Excessive Cum, Cum Inflation, Growth, Balls Expansion, Penis E...

Paradise Found Ch. 02

by Nexte100 on Jul 10, 2019
Sci-Fi & Fantasy

Alex It was Friday, two days after I met Ash on the Metro. The hour was drawing near when I was supposed to meet El for coffee, but I still hadn't decided what to say. It was a brisk night, but as the coffee shop was only about 3/4 of a mile away, I decided to walk and mull over my situation with El. The same arguments played out in my head as had for the...