Kenta, unable to find a place to stay, temporarily lives at his step-uncle's house for a while. As his uncle is often away on business trips, most of the time only his two aunts and himself are at home. Kenta has always had feelings for his aunt Sakura, wishing to marry a beautiful woman like her. Despite such thoughts, being with Sakura makes Kenta feel satisfied. He often waits for Sakura to take a shower before sneaking in to masturbate with her panties. Unfortunately, Sakura catches him in the act this time. Instead of scolding him, she not only helps him feel more pleasure by giving him a blowjob, letting him explore her body, but also allows him to have sex with her! From then on, the two become closer than ever. Whenever Kenta comes home tired from work, Sakura satisfies his sexual needs to recharge his energy. In this way, they maintain this inappropriate relationship throughout the time Kenta's uncle is away on business...