"We're not related by blood, but we're real parents." Now that same-sex marriage has been legalized Nao and Ai, who have been lovers since college, decide to register their marriage and adopt a baby boy named Hiro. Nao is sensitive and cries easily, while Ai has a 'going my own way' attitude. The two polar opposites begin child-rearing while dealing with the ups-and-downs such as colic at night, the first day at a nursery school, and making friends with moms!
「血は繋がってないけど、俺達は本当の親じゃん」
同性婚が認められることになり、大学生時代から恋人関係だった奈央と愛は籍を入れ特別養子縁組で愛息ひろ（0歳）を授かった。
繊細ですぐに泣く奈央とゴーイングマイウェイな愛。
正反対な二人による、夜泣き対応、保育園デビュー、ママ友付き合いなど、酸いも甘いも噛み分けた子育てが今始まる――！