Kusanagi-sensei, who rejected the confession from his best friend's beloved daughter, Ichihime. Since the other party is a student, that decision is only natural. However, Ichihime does not give up on her first love! Another woman who loves the teacher, his junior, Arimura-sensei, invites Kusanagi-sensei on a Christmas date. What will be the outcome of this holy night’s trial――!?