Muscle Growth Futanari Stories

52,015 results
Orientation
Length
Source
Infinite Scroll

Life and Times at Futa Academy

by Pflegeprofil on Apr 29, 2025

The world has a 50/50 split of Futanari and regular women, Males do not exist. Futanari are women who have a penis, though they themselves can be split into two genders, Pure and Hybrid. Pure Futanari are women who do not have a vagina. They are the rarest of the genders, only making up 15% of humanity. They are usually taller, and have the capacity for more...

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Autus: Epilogue Pt. 02

by sexgundam666 on Dec 24, 2019
Sci-Fi & Fantasy

Author's Notes: WARNING!! This story contains extreme growth and Hyper sized cocks. If you've read the previous epilogue chapter, this may be up your alley, however if not, then I strongly urge that you either read it, or do not continue if cocks five stories tall does not appeal to you. You have been warned. Those who continue, enjoy. ***** Gwen's Journal...

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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Autus: Epilogue Pt. 01

by sexgundam666 on Oct 8, 2019
Sci-Fi & Fantasy

Diana's Journal – Entry 1 This is exceptionally late into the experiment. I honestly can't believe I didn't consider this before, though it's not all that surprising; I've been known to neglect things like this in the past. Allie says that it always makes her laugh, since I'm one of the more exceptional students in the university. I'd be lying if I said I d...

Amy - The Amazon (Usually) Ch. 11

by sexgundam666 on Oct 12, 2020
Sci-Fi & Fantasy

"You're really gonna wear a dress to a movie?" Amanda asked. Amy smoothed out her only dress, "Hey, I don't know if or when I'm gonna grow again. This might be my last chance to use it." Even if she didn't grow, the fabric struggled around her curves, threatening a tear whenever she breathed too deep. Her cock stood out unclasped, so Amy used a few straps t...

Autus Ch. 04

by sexgundam666 on Sep 19, 2017
Sci-Fi & Fantasy

One of them broke out from the rest. Her steps were long and powerful. Gwen looked up at her, knowing she would have to even if she weren't kneeling. She didn't waste time, gripping the redhead's hair in one hand and bringing her close to her crotch, where her flaccid cock hung in wait. It was at least four inches at the time, something Gwen was eager to cha...

Autus: Final

by sexgundam666 on Dec 24, 2019
Sci-Fi & Fantasy

"Um, Mistress? Can I, uh, can I get up now?" She asked, squirming slightly where she sat, partly from the growing discomfort and embarrassment at calling Gwen by such a title. The redhead looked at her, almost seeming not to realise what she was saying, but realised the brunette had been sat there for quite some time.. "Oh, yeah. Sorry, um, you can move ar...

Autus Ch. 06

by sexgundam666 on Sep 19, 2017
Sci-Fi & Fantasy

The redhead almost felt sad that she had eaten lunch, knowing she would need all the room she could get, but at the same time, she knew her body would expand as needed. A gallon a person, she thought, and knew today would leave her little more than a human balloon of cum. "How many are there?" She asked, already taking off her blouse. Allie's eyes naturally...

Amy - The Amazon (Usually) Ch. 06

by sexgundam666 on Jan 29, 2020
Sci-Fi & Fantasy

Amanda yawned and stretched to pop her joints. She didn't have classes that day, though Amy did. Despite the Amazon's protests, Amanda convinced her to go, largely to let her body relax after last week and the subsequent nights thereafter. Turned out she could only handle so much of Amy's new size. Her pussy ached in satisfied exhaustion, still loose from la...

Stories Of Giantesses & Tinies!

by WarMasterThe1st on Apr 22, 2025

First, I'm gonna start out by giving shoutouts to some cool people/authors! masterfulmastus, starwarsalpha1, danny222, hexall, silent soul ken, cheese111, and Pants! These people all write some good erotica and I am a fan of their chapters/work! Check them out for some good size-related content! Also, some of the ideas and content here might have been inspir...

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