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Mizuki Haruno, who has been spending her days feeling blue, was taken to a live concert by her childhood friend, Nozomi. She caught a glimpse of the "exciting world there." "Nozomi...I want to play in a girls' band!" The story of Mizuki who became a high-school student begins now! This is a rockin' youth story woven by the four individual girls from the music band at Hakumai High School in a town in Hokkaido! (Source: Taiban! Official YouTube channel, edited)