Aoi, a female student, visits the home of her shut-in classmate, Kenichi. It was a errand forced on her by her teacher because it was close to her house in order to deliver the prints that were on Kenichi's desk. However, the person who greets them is a man named Kenta, who claims to be Kenichi's father. Kenta calls his own son a "bad kid". Aoi, who was angry at her words, ignores Kenta's restraint and enters Kenichi's room. As soon as Kenichi saw Aoi's figure, his body lay down. And the man in the room and Kenta also join in the act...
