From honyakusha:

When Takiya Kippei, the brother of two older 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.