Of course

The gym girl submits to the huge cock imbedded in her tight pussy. She moans loudly, so much the whole apartment building could hear. You have now fully spawned into your normal, demonic form. You feel empowered and unstoppable.

Your phallic tail moves to her mouth and she takes it immediately. She sucks it and becomes increasingly infected with the virus. You can see her skin change colour slightly. Her moans get deeper and you know she is past the part of no return.

You lie down in the kitchen benchtop and the gym girl rides your demon cock, fully in her best and last human orgasm. She rides you fast and hard, faster than any human girl ever did to you before. You feel an immense power run through you. The feeeling is similar to an orgasm but no orgasm you had as a human felt this good.

Sudddenly, your demon cum spurts hard into her pussy and this sends her over the edge. You feel her soul pass through you and strength your own demonic state. Your body is more muscular and your cock thicker than before. But the gym woman has wings split and grow large from her back. Her hair changes to a dark crimson colour and flows down her back. Her breasts fill out and already athletic body shape morphs into the more normal demonic state and her face changes to a beautiful demon face. She moans her last human moan and looks harshly into your eyes with her new demon eyes.

"Thankyou master. Fuck me more." Her demon tongue explores your mouth and you embrace and slowly fuck as the conversion is complete.

"What the fuck! Kate!?" Suddenly a voice from behind you. A young man, just out of the shower, stands there in absolute shock. His sight cant believe the image but his mind and his hard cock say something else.