Her Blue Sky

Aoi Aioi, a 17-year-old high school junior who lives in a town surrounded by mountains, spends her days immersed in music, playing her beloved bass whenever she has free time. Her older sister, Akane, constantly worries about Aoi. The two have been living together since they lost their parents in an accident 13 years ago. One day, the name of Akane's former lover, Shinnosuke Kanamuro, who also introduced Aoi to the joy of music, is announced as a supporting musician at the town's upcoming music festival. A "second first love" that connects the past and present begins.