I've been close with my little sister, Airi, since we were children, and as her older brother, I've always accepted her requests to shave her pubic hair as it started to grow in. However, Airi has recently become more aware of her sexuality and has grown distant. It seems she has found a boyfriend. I can't just hand over Airi, whom I've lived with for over ten years. "Wouldn't big brother be better?" Before I knew it, I was devouring Airi's body.