The Office Lady, the Rika married son of a noble family, Takuya of the business partner. The Rika cannot help wanting to be proud of one's life in Elderly Sister, the Nanako of the honor student who was the cause of the inferiority complex all the time since I was young. Because the Nanako which married a person from a different nationality on such one day was divorced, went back to its own country, and the Nanako just rolled into the cause of the Rika. The cohabitation of such three people begins….