High school student nana lives alone in an apartment with both parents working. She has a shy personality and a pure, innocent face, the epitome of a true high school girl! Living in the same apartment building is a freelancer named Takamoto, who has a dark and twisted desire. Every time he passes her coming home from school, his perverted desires grow stronger. He secretly takes pictures of her, but that's not enough. Finally, he sneaks into her room when her parents are not home.