Marika, a teacher who has left her husband Yuto and is assigned to work alone, is forced to have a relationship with her student, Yuuki. The next day, Marika leaves the room with mixed feelings and is approached by Torao, the manager of the condominium. Torao, who happens to know the relationship between the two, threatens Marika with a kiss photo of Yuki and her Marika, and plays with her body all day in her Marika's room. Yuki who rushed to worry about her absenteeism Marika goes over her body with Torao. Yuto realizes that her wife looks strange and is invited by her classmate Rumi ...