Akira Tachibana is a 17-year-old high school student. She was once a promising athlete, but an injury has prevented her from taking part in track and field. One day, Akira Tachibana goes to a family restaurant and the manager talks to her in a tender voice. This makes Akira Tachibana begin working part-time at the restaurant. The manager is 45-year-old Masami Kondo and he is divorced with a child. Akira Tachibana falls in love with him.

Ren Takahashi and Aoi Sonoda were both born in 1989. They met for the first time at the age of 13 and became each other's first love, but they separated. At the age of 21, they met again. They were unable to undo their past. Now, they are 31 years old.

京都の美大に通う20歳の学生・南山高寿(福士蒼汰)は、いつものように大学まで向かう電車の中で出会った女性・福寿愛美(小松菜奈)を一目見た瞬間、恋に落ちた。勇気を振り絞って声をかけ、「また会える?」と約束を取り付けようとした高寿だったが、それを聞いた彼女は、なぜか、突然涙してしまう―。彼女のこの時の涙の理由を知る由もない高寿だったが、不器用な自分を受け入れてくれる愛美にますます惹かれてゆく。そして、親友・上山(東出昌大)からの後押しもあり、初めてのデートで告白をして、見事OKをもらい交際をスタートさせる。初めて手をつなぎ、初めて名前で呼び合う、そんな初めてのことがあるたびに泣く愛美のことを少し不思議に思いながらも、より愛美への愛情を深めていく高寿。そんな二人の関係は、誰もがうらやむ程に順調で、すべてがうまくいくものだと信じていた…。

2021 film directed by Nobuhiro Doi