Natalie returns.

It was Tuesday night when both of the girls finally left. They spent both days fucking in everyway imaginable, Frank dousing them with copious amounts of his magical seed. He was keen to see the effects his cum would make on two already beautiful ladies, what about them would change? He fantasized about the changes; neither of them needed to lose weight like Nat did, but Hannah’s breasts were quite small and Laurens ass was slightly flat.

On Wednesday, mid-morning, Nat returned from her business trip.

“Oh my god, I missed you so much.” She came bursting through the door, kissing him desperately.

It wasn’t long before they tore each other’s clothes off and rutted in the hallway like animals. Frank was pumping into her deeply when he realized something, her vagina housed most of his cock; he was almost twelve inches deep into her. He had no trouble sliding most of his length in and out of her middle aged cunt, unlike Lauren and Hannah. Looking down between them Frank saw something that horrified him and turned him on crazily: the outline of his stick distending from her stomach.

“Oh shit are you alright, Nat?” Frank asked, gasping.

Nat opened her eyes and looked between her spread legs. “WOAH! Yeah I am fine, you are so fucking deep…so fucking good.” She shouted.

Taking the encouragement Frank pumped into her watching the thick pipe invade her stomach. He wondered if Nat being able to shelter so much of his dick was a modification made by his cum. But before he could think it through he head Nat whimper.

"Cum inside me...yeah baby... I'm on the pill... yeah fill me up." She sounded like a pornstar egging him on.

Frank came, spurting strings of his hot seed deep into her womb. She hungrily spooned it out of her twat and feasted on it.

“God I’ve missed that taste.” She said, swallowing. She reminded Frank of a **** addict with the way she absorbed every millilitre.

The rest of the day went by and Frank began to notice the dramatic effect that his semen was having on Nat’s personality. She had become almost a complete sub, asking for permission for everything, doing whatever he asked and best of all devoutly worshipping his dick. She was sucking his dick so much that it got to the point of him asking her for a break every now and then.

Ever since Frank had been given these godly powers of sex, he had something on his mind: a harem. He loved the thought of multiple women worshipping him, having sex with him whenever he pleased. And now that he was noticing how much of a sub Nat had become, he thought he might just be able to achieve it. He decided to test the waters with his main mistress.

“What do you think about me having sex with another woman?” Frank asked, unannounced.

It was Thursday afternoon, he had just given Nat four large loads of jizz and now he sat on the couch watching T.V., with her still kneeling in front of him, worshipping his semi-erect cock.

Nat took his cock out of her mouth, “If it would make you happy… I guess it would be fine.”

Frank was ecstatic, that was the perfect answer. “How would you feel about joining me and this unnamed woman?”

She stopped mid-slurp, “As long as I get some of this dick, I’m happy.” Nat grinned.

“And what if I asked you to have sex with this woman for my pleasure?” He tested her.

“Hmmm… yeah I guess if it was for you, I would do it.” She replied.

“Mmmm. Very good. Well done… my slut.” He said boldly.

Nat seemed to love the compliment, and grinned back up at him. His cock slapping her lips.