MIAA-365 The girlfriend we just started dating ended up being the sister-in-law of a slutty senior... - Mitsuha Higuchi

Mitsuha lives a happy life with her kind boyfriend, and her stepbrother was born through her parents' remarriage... He turns out to be a rumored senpai at her boyfriend's part-time job. - The day she is attacked and creampied while her parents are away, her happy daily life falls apart. - Every day, under the same roof, she is transformed into a pussy that matches her brother-in-law's specifications. - Gradually, she doesn't even answer the phone with her boyfriend, and she wants a cock herself and gives a service blowjob. - She turns into an orgasmic girl who loves sex, and becomes unable to live without her stepbrother...