Shizuku and Yui are idol-like girls at the school, and Hosoda is dating Shizuku. He's a cruel bondage man. He bound Shizuku every time. Yui is bisexual and has a boyfriend, but she has intense romantic feelings for Shizuku. Yui comes to Shizuku's house and urges him to break up with Hosoda and has sex with Shizuku. Hosoda, who is a bondage demon and jealous, sees the two having sex with a voyeur camera set up in Shizuku's room, and becomes enraged and burns hostility.
