Due to work, Maya, the aunt, comes to stay in Tokyo and asks her nephew, Ritsugi, to let her stay at his apartment. Meeting her again after a long time, Ritsugi is overwhelmed by her unexpected beauty and finds himself deeply attracted to her. Living together becomes a dreamlike experience for Ritsugi, who grows increasingly excited by Maya's unconscious sensuality. One day, bored and alone in the room, Maya gives in to temptation and begins pleasuring herself. At that very moment, Ritsugi returns home and accidentally witnesses the entire scene. This shocking encounter rapidly deepens the relationship between the two.