Manami, who became a longing teacher, felt that her job as a teacher was worthwhile. One night, Umeno, a student in his class, comes to his house and suddenly confesses, but he gets angry and turns back when he is insane. The next day, Umeno, who was furious with Manami's attitude, forcibly invaded Manami's home with his friends and occupied Manami's home, and days like him ● began.