Kimijima Honoka (Shibuya Nagisa), a temporary teacher, witnessed a female student jumping off the roof. While attending a summer cram school, she noticed a student who shouldn't be there. Soon after, Honoka and other students in the cram school, including Miura Hitomi (Hayase Hikaru) and Maekawa Takeshi (Yamatoki Satoshi), learned the shocking truth about that female student.