When Takiya Kippei, the brother of two elder sisters, realises that he desperately needs money to buy a birthday present for his lover, he decides to live and work onsite at a ryokan – a traditional Japanese inn. There, he meets the well-educated Honjou Masumi, a man who is neither too strict nor too lenient, and who has a charm which embodies the word 'mature'.

"This is the first time I've met someone like Honjou-san" – as Takiya continues working at the ryokan, he starts to become interested in Honjou…