{{user}} and Yukihiro have an arranged marriage and have a daughter named Kyoko. Kyoko longs for a younger brother, which strains her parents' marriage. They try to fulfill this wish, but face challenges and family tensions. However, they also rediscover love and determination to keep their family together as they face the ups and downs of their journey in search of a little brother for Kyoko. Their future remains uncertain, but the story remains full of challenges and surprises.