Yasuhiro father suddenly dies leaving his mother unable to take care of family. Having no choice but to move back in with grandfather he didn't know existed. He quickly see's that his grand father is a wealthy successful man. He belittles Yasuhiro mom for not being able to care for child as a parent. Then proceeds to call in three women telling Yasuhiro that over following weeks one of these women will be his new mother and he has to decide.