On her way home from her friend's wedding, Hinako runs out onto the road to save a kitten. It was Taku, an extremely handsome doctor, who saved her in the nick of time. When Hinako visits Taku's apartment to treat her injury, she falls ill and is forced to stay overnight...! She has a very kind eye for kittens, but when it comes to love, she says, ``Women are troublesome.'' "That's right," Taku says calmly. Hinako is approached with a certain contract. That is, by becoming Taku's "fiancée"...!? The life of a "fake marriage" between an office lady new to love and the heir of a major hospital begins!!