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Ritsuka Uenoyama a high school student and guitarist wants to skip gym class to nap but to his surprise fellow and unknown to him student Mafuyu Satō is in his already sleeping in his usual hiding place. During this unexpected meeting Mafuyu asks Ritsuka to repair and to teach to play his Gibson ES-330 guitar. Ritsuka declines and sets off the story of this unlikely duo. We are also introduced to Yayoi Uenoyama (Ritsuka’s older sister), and band mates Haruki Nakayama (bassist), and Akihiko Kaji (drummer).