Spare her

Under the ministrations of her ex-lover and still hot from her transformation, it doesn't take long for the young succubus to cum again. She grabs hard onto the head of the human and pulls her against her snatch as she squirts and shakes. Rachel tries to swallow it all but she chokes on the onslaught of corruptive juices. You cum at the same time, your tail filling up the human with the dark and corruptive cum. This is finally too much and Rachel also starts cumming. Her muffled scream ends in a whimper as her soul is torn from her and she begins to transform. Dark blue colour spreads on her body and even her asshole begins to convulse and milk more cum from your tail as her body is transformed into a creation of sin and sex. No longer needing to breathe she soon recovers and plunges her forked tongue deep inside her lover's pussy, biting the succubus' clit with her fangs, eliciting a scream of pleasure mixed with pain out of her.

Pleased with the rebirth of your new sister the trio of succubi crawl up each others bodies. Tails plunging into pussies and assholes, clawed hands roughly caressing and fingering each other. Soon you all cum again at the same time and the orgasmic screams are loud enough to rattle the windows and wake up every human being on the block.