The hot spring inn where Rina works as the innkeeper is her mother's family home, and because no successor was found, Rina has been the innkeeper for 20 years. Rina, who has a strong libido by nature, had been relieving the stress accumulated from her innkeeper work solely through masturbation. One day, a former student from when she was a nursery school teacher came to visit, saying, "I have something I want to consult with you about." That consultation was that "I can't confess to the woman I like." To top it off, that student was still a virgin. She decides to take off her clothes for the virgin boy for the first time.