Kyoka is a popular and earnest female teacher who is the head of her grade at a young age and works hard every day. One day, she calls in a problematic student in her class, Saji, to reprimand him. However, Saji stops coming to school the next day. When she calls Saji, he simply says, "If you come to the place I'm about to tell you, I'll listen to what you have to say." Kyoka is puzzled, but when she heads to the specified location, what awaits her is... a hellish place beyond her imagination. #YoroP