香港國際電影節、東京國際影展、上海國際電影節

活潑開朗的佐藤紗千（岸井雪乃 飾）和個性認真的佐藤保（宮澤冰魚 飾）在大學相遇，性格截然相反的兩人，不知為何卻互相吸引，進而展開同居生活。五年後，立志成為律師的阿保在司法考試中落榜，為了陪伴並支持持續自學準備考試的他，紗千也決定一起加入挑戰司法考試。很快地，紗千成功通過司法考試，阿保卻依然榜上無名。同時，剛展開職場新生活的紗千發現自己懷孕了，興奮的兩人決定攜手建立美滿家庭。然而，成為律師，每天工作忙到昏天暗地，連飯都沒時間吃的的紗千；一邊育兒、做家事，一邊持續準備考試的阿保，明明兩人都沒變，不知為何，這段婚姻似乎漸漸地變質了……。

An unconventional marriage story by director Amano Chihiro, who gained attention with Mrs. Noisy. A realistic portrayal of the 15-year journey of a man and woman sharing the same surname.
Extrovert Sato Sachi (Kishii Yukino) and introvert Sato Tamotsu (Miyazawa Hio) met at university. Though polar opposites in character, for some reason they get along well, start dating, and even start living together. Five years later, Tamotsu, who is aspiring to become a lawyer, fails the bar exam. Sachi, wishing to support Tamotsu as he continues studying independently, decides to study herself and take the bar exam, but...