I, Kyuujin Shidou, was discovered to be related to the leader of the Mauki Group, the largest corporation in Japan. In order to succeed the leader, my grandfather who did not have much time left to live, I would need a spouse...... In other words, to have a wife, that was the necessary requirement. But even so, all my life, let alone a wife, I never had a girlfriend! After much consideration, I decided to consult with my two female childhood friends. The deadline for choosing the successor, in other words, I would need to have a wife in three months. So only until that time, I wanted them to pretend to be my wives! ――The once in a lifetime request, but after that, falling in love, living together, and eventually developed into doing ecchi things everyday, I never thought at the time that it would turn out this way. Two childhood friends―― An extremely shy ojousama・Kuranozono Iwai. And a pure-hearted gyaru in love・Kousaki Ririka. Which one of them, is going to become my wife――!?