Because her father-in-law was old, Nao and her husband inherited the public bathhouse that he left behind. Because her husband was used to working in an office, managing the bathhouse while also going to work was too hard.

Asakura decided to help her husband manage the bathhouse. But because of that, the two of them rarely saw each other.

Her husband had to take care of his father after work, which made Nao, although she craved sex, unable to do anything about it.

One day, Asakura, a young but extremely hard-working boy, kept working overtime and had to come home late. He still came to Nao's bathhouse often and even though it was closing time, Nao still let Asakura in.

Once, because he was so sleepy, Asakura fell asleep in the bathtub, Nao quickly rushed in and saved him, she suggested that he quit his current job to come here and work for her. Asakura agreed and from then on, Nao and him were often together, both of them began to develop feelings. Even though she knew it was wrong, Nao's body was too thirsty for sex, when Asakura took the initiative, her mouth couldn't say it but her body wanted to enjoy it more...