Fiona the futa

“He has a point you know,  your room is a mess every time I walk in there” you heard Fiona’s muffled voice.

“What are you, my mom? Get off my case Fiona. It's my room I can take care of it however I want to”

“Whatever, I am gonna use your toilet” Fiona replies annoyed.

You begin to write….

Jeremy cracked open a beer and took a long gulp, halfway through the taste seemed off. It tasted bitter and gross, the fizziness even made it worse. Jeremy spat the rest out and tipped his bottle down the sink.

Weird, it's my favourite beer Jeremy thought

He got another beer and tried it but it tasted just as bad, he even checked the expiry to see if it was off. Maybe the brand just had a bad batch, he reasoned.

He took a lighter-tasting beer but again he spat it out because it tastes like shit.

 “What the fuck are you doing with my Beer?” Fiona asked Jeremy, who looked at her in shock.

The Asian girl had changed considerably. Long gone was her slender figure, and now standing before him was a towering Amazonian at 6’8. Her stature was complimented by lean, muscular arms and powerful legs that strained her jeans. Her old crop top now a larger size revealed a set of well-defined abs, but the most drastic change was the bulge in her pants. Her tight jeans hugged a foot-long cock, the biggest Jeremy had ever seen. 

“Fiona?” James said, “What the hell happened to you?”

Fiona’s face twisted from annoyance to anger, “Fiona? Hell? Jenny have you gone insane swearing at your stepfather by her name?! You will call me your Dad or daddy young man! And I expect you to get rid of that foul language”

“You're my stepdad? Is this some kind of joke?” Jeremy replied in disbelief.

“I could ask you the same Jenny, did you hit your head slut? Wasting my damn beer and disrespecting me”

She swiftly closed the gap between them, her figure now loomed over Jeremy. She grabbed the beer bottle out of his hands and drank it like water, then held out the empty bottle to him.

“What are you waiting for?” Fiona demands

“Throw your damn bottle!” Jeremy replied pissed off and began to walk only to be picked up by Fiona like a child. She casually walked over to the sofa while James thrashed around with all his might to escape.  She put him down roughly and began to take off her tight jeans.

“Sissies like you think your top shit when you have a little freedom, your father was like that too until he saw what my cock did to his wife. Just one look at my dick was all it took to make her mine”

She then revealed her cock, a pale white veiny shaft which to Jeremy’s horror began to morph and transform into a much thicker and longer cock. Its colour became darker until it was pitch black, and the pulsing veins became slowly green and glowed. The mutated cock’s skin peeled back halfway, revealing a cock head that was glowing green, while the green flesh beneath it was covered with large hard bumps.

“That's the look, the same look your mother had before I showed her what real sex felt like”

“What are you?” Jeremy said with terror on his face.

“Don’t be that surprised now, don’t you already know my cock can transform into whatever I want it to be? This one right here is a mutated orc’s cock, it's your mother’s favourite”

Jeremy tries to dash for the exit, but Fiona’s strong hand wraps around his neck in an instant, making his head rattle from the ****.

Her grip tightened and he desperately tried to remove her hand but even punching and kicking had no effect on Fiona.

He then realised why he was so weak when he saw his fists. His hands looked much different now, they were smaller and more feminine. He looked at his arms, now slender and petite, a far cry from his large muscular limbs. He then slowly looked down and let out a gasp as he saw his figure, now slender without a once of muscle. He was now more akin to a femboy, hell he was even wearing a pink apron that did nothing to cover his now fat ass.

Fiona in one tug removed his apron and exposed his now small figure. She then dragged a white fingernail across his cock, now a tiny shrivel that looked miniscule. The sensation made him ejaculate a tiny drop onto the floor. 

Fiona smirked, “Like father, like son” she said looking at Jeremy who now had a terror in his eyes. He looked down and saw Fiona turn him around and positioned him right above her cock.

“Wai-“ Jeremy was cut off, before he can finish the sentence his ass was being stretched by the green dick head, and he howled in pain and pleasure. The green dick pushed its entire head in, then pulled back before being rammed in again, making Jeremy cry out louder.

With each thrust of Fiona, her cock was deeper inside him, and he kicked and screamed but by the fourth thrust, his body stopped listening to him as he ejaculated over and over again. Pain and pleasure mixed as Fiona’s mutated cock **** to open his ass, his howls of screams became moans. He felt his neck being gripped by her large hand, two of her manicured fingers now inside his mouth forcing him to suck them. Her right hand on his wide hips kept him balanced as his body went limp, the cock now relentlessly thrust all the way inside his asshole.

Fiona growled as the speed of her pounding got faster and faster.

“You think you can disrespect me?!” Jeremy heard her yell, he wanted it to stop, but he couldn’t get out a word. “I am going to teach you some fucking manners you hear me? By the time I am done with you, you're going to be begging for my cock!”

With a final thrust, Fiona grunted louder than ever and Jeremy felt a hot jet hit his insides. He felt his stomach getting bigger, as spurts of cum were **** into his body. His stomach bloated up and he felt thick hot seed run down his legs, his asshole failing to keep all of it inside.

Jeremy felt his mind fade away as he lost consciousness, he was tired and confused, and the only thing he felt was her hot cum in his stomach getting bigger.

——-

You smile as you see Fiona finish in Jeremy. The once tall and proud man was now reduced to a femboy whose small cock was now being used as a cocksleeve.

You summon the notebook, which instantly appears in your hands with a pencil.

You look at the rules you added for Jeremy, 

New rule: Jeremy’s favourite food is cum, everything else tastes bland to Jeremy

Old rule: Jeremy is a 5’4 slender femboy 

Old rule: Fiona is a 6’8 dominant futanari with a muscular body.

Old rule: Fiona’s cock can transform her dick into any being’s cock, fictional or real, but the cock’s size cannot be bigger than her.

Old rule: Fiona’s cock, can make her partners adapt to her cock, thus her cock cannot damage her victims' insides.

Old rule: Fiona cucked Jeremy’s dad by fucking Jeremy’s mother,

Old rule: Fiona loves and gets great sexual pleasure from humiliating Jeremy, and his dad. 

Old rule: Jeremy’s mother loves Fiona and her big dick, falling for her cock instantly.

New rule: Jeremy is the only one who noticed these changes.

Old rule: Jeremy’s mom became Fiona’s wife only after he left home to live near his college to study

You add one more rule

Old rule: Fiona treats [user] as a friend and equal.

Author’s note: Feel free to suggest ideas, I will try my best to write them in that direction. Although, the release of chapters might take some time