My girlfriend, who I just started dating, has become my step-sister to a senior who has sex...

Mitsuha spends happy days with his kind boyfriend, and his brother-in-law, who was born after his parents' remarriage...it's a rumoured senior who is at his boyfriend's part-time job. On the day he was attacked and creampied in a house where his parents were away, his happy daily life collapses. I'm being modified under one roof to a pussy that is designed to be my brother-in-law. Gradually, she didn't answer the phone with her boyfriend, but instead wanted a dick and gave her a blow job. She transforms into an orgasmic girl who loves sex, and ends up having a body that she cannot survive without her brother-in-law...