High school student Hirai Sakura (Nakagawa Taishi) grapples with the remarriage of his mother, Junko. She has already had two failed marriages. Then Shiho, the daughter of Junko’s ex-husband, Oba Ichiro, suddenly appears on their doorstep. Oba’s condition at the time of their divorce 7 years ago, was that he would have Shiho. Junko and Sakura were forced to leave Shiho behind, crying as they left her. A cheerful Shiho, now 20, says she has decided to go to England to study and has come to greet Junko and Sakura before she leaves.