So I’m pretty sure that they’re brother and sister from my memory. The brother was moving out or something and the sister thought he and a friend were together but they weren’t. Then, a rapist teacher tries to assault her but the brother flying kicks him in the head and saves her. Then they had sex. I’m not too sure about the incest part if it really was incest but I really can’t remember it fully and I’ve been searching for a while now and couldn’t find it so any help will be welcome thank you