A college student living in a run-down apartment filled with noise and eccentric neighbors... His life was nothing but monotonous days spent at university without dreams or hope. One day, a mysterious woman named Ayaka Mutou moves into the room next door. There's something eerie and alluring about her. Before he knows it, she keeps showing up uninvited in his room, whispering seductively that he can't resist. Soon enough, he finds himself lost in passionate intercourse with this married woman. Note: Content may vary depending on distribution method.