本片由曾有照顾母亲经历的中川导演执导，是一部半自传性质的作品。故事讲述面临人生抉择的高三学生藤村佑（山时聪真 饰），与身患重病却始终关爱儿子的母亲美咲（菅野美穗 饰）之间的亲情故事。在命运与时间的交织中，母子二人一同面对生命的无常与温柔，展现出深沉的爱与别离的勇气。

Kyo Otsuka is a shy high school student with zero confidence but he has feelings for Naoko Miki, the most popular girl in his class. Instead of putting himself forward, he watches her from afar as she hangs out with her energetic friends. This includes Hirofumi, Miki’s childhood friend and Kyo’s friend. Hirofumi is handsome and athletic and has a nice personality. When another shy student stops going to school, the feelings of everyone begin to change.

A high school class is learning about LGBTQ, but the students grow suspicious when they realize that no other classes have such lessons. Is there a queer student in the class?