[TSF no F (Betty)] Okatai Anata o Moto Yawarakaku [Guestoid]

A horned demon girl with a taste for mischief sinks her claws into a stiff, uptight man and melts him into a soft, busty young woman eager to learn what her new body can do. What begins as an intimate lesson between the smirking temptress and her flustered new plaything—teasing licks, trembling moans, and the demonic crotch tattoo marking her handiwork—soon spirals into pure insatiability, as the reborn gyaru struts into a classroom of eager men and invites them all to do whatever they want to her. When her first overwhelming female climax finally crashes through her and the demon purrs her teasing question about how it feels to be a girl, there's no going back.