Atsushi who went to play at the house of the span almost every day. Over time, Atsushi secretly fell in love with Wataru's mother, Aya. Atsushi begins to peek at Aya from behind her, and her feelings of love gradually turn into twisted emotions. Atsushi, who wanted to make her Aya his own woman, forcibly brought Aya into her bedroom where there was no one.
