Aina cared for a man who was crouching down due to heat stroke near her home. The man's name is Kamiya, and when he finds out that Aina is an employee of the welfare office, he confides that he is unemployed and begs for help. Aina, who originally likes to take care of herself, can't leave her alone and consults with her, but Kamiya, who mistook the kindness she touched for a long time as a favor for herself, is lustful for Aina.