An Odd Compulsion

It would feel good to fuck his sister's body again, and Aaron was halfway through rising to get the multitool when an idea occurred to him.

Instead of reclaiming his dick, Aaron climbed atop 'Natalie' and knelt over her, placing Sasha's pussy lips just an inch above the head of his own penis.

His heart was racing. Why was his heart racing?

This was hot, but he shouldn't be this excited should he?

He felt exhilarated, as though he was discovering something new, but this was hardly the first time he'd been fucked by his own cock before.

Still wondering vaguely at his own sense of anticipation, he felt Sasha's legs slowly lowering his body down, his suddenly soaked pussy lips parting around the peach's dick as it cried out in his sister's voice.

Something felt strange. Aaron couldn't quite work it out. He wanted to fuck himself on his sister, and that's what he was doing, but it was like he was half asleep and just experiencing something without actually putting in the effort. He could feel his girlfriend's tits bouncing on her chest, feel the muscles in her legs tighten as relax as her body rose and fell, feel the hardness of his own cock plunging in and out of his stolen pussy. This was exactly what he wanted, so why did it feel like he wasn't in control?

With a breathless squeal, his sister's body came inside him, and the hot rush of cum made Aaron's own body tremble in orgasm. Again, he felt the surreal ticking sensation - like a feather brushing the back of his neck and running along every nerve in his body - as Sasha's limbs convulsed.

He felt the peach spirit spurt its way into his body, confused at its new surroundings. Aaron raised Sasha's hands up to rub her belly as if to comfort it, but inside he felt something else shift.

The other spirit inside him moved with a purpose, approaching and then suddenly enveloping the peach spirit. Aaron could feel the soul fluttering inside him like a butterfly in a shrinking bubble: Rapidly at first but with less and less energy with every passing second. Soon he could barely feel anything and then... nothing.

The potato spirit had absorbed the peach.

Aaron felt Sasha's body moving of its own accord and with horror realised that it had taken control without him even noticing.