Youth suspense story where Ren Ozawa, who appeared on various popular stages and acted as a variety program and voice actor, serves as a high school teacher for the first time. An incident occurred on Valentine's Day when a student died due to poisoned chocolate. The teacher, Nishina (Ozawa),who is cold and ridiculed by students, tries to unravel the truth

• Yuzuki Hoshimoto
• Ren Ozawa
• Koji Kominami
• Toshiki Tateishi