After graduating from high school, Matsuri, a recluse, spends her days indoors indulging in sexual fantasies.
Matsuri’s parents worry about her but also enjoy a loving, affectionate relationship together.
However, seeing her parents so close only fuels Matsuri’s fantasies further.
One day, after Hiroki helps her pick up some laundry she dropped, Matsuri starts to develop feelings for him.
As he becomes the subject of her sexual fantasies, her make-believe world expands even further.