Kaoruko and Kazumasa Harima are a separated couple with two children. They plan to divorce once their daughter, Mizuho, enters elementary school. One day, they receive devastating news of their…

Yuko Morimiya is a high school student and she lives with her stepfather Morimiya. Morimiya is her third father. Her mother, Rika, is a free spirited person and has remarried…