That JAV

Mizuki and I are not really brother and sister. We met when we were both stepchildren from our parents' second marriage when we were students. Several years later, after our parents died in an accident, we lived together, supporting each other. As we continued to live alone together, I began to develop a crush on Mizuki. My dream of being alone with Mizuki was stolen away by my best friend, Kyohei. Kyohei, who has feelings for Mizuki, is jealous of our relationship, and while I am away, he makes a sudden approach to Mizuki...