"He Who Knows the Blue Sky" is an animation film released in Japan on October and November 2019. The length of the film is At 108 minutes, this film was nominated for Best Animated Film at the 43rd Japan Film Academy Awards after its release. This film tells the story of Aoi and Akane who both lost their parents when they were very young and became orphans. In order to take care of their younger sister, Akane did not go to Tokyo with her lover Shinnosuke Kane, but stayed in her own I found a job in my hometown, played the role of mother, and took care of my younger sister. After 13 years, Aoi has become a big girl. As a sophomore in high school, Aoi plays the bass every day without any motivation. I didn't shift my mind to further studies and exams, but now I see it, and I am anxious. One day, I held a concert on this stool, and Aoi accidentally found the shadow of Shinnosuke Kane at the concert. It was discovered that he had returned to this town. At this moment, Shinnosuke Kaneshi 13 years ago traveled back to the side of the two of them