Michiru and Maya have decided to end their cohabitation for the sake of Michiru's son, Yuta. One day, while visiting the home of her late husband, Keiichi, Michiru is offered by Keiichi's family to live with them. Michiru's heart wavers, but Yuta can no longer bear Maya's absence... They have six months left until they officially end their cohabitation. A final decision between two women.