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A high school student with outstanding guitar technique, Tatsunatsu Uenoyama meets a mysterious classmate, Satou Mafuyu, who holds a Gibson with a broken string at the landing of the stairs leading to the roof of the school. Uenoyama takes him to the practice of his own band. Uenoyama shows a performance with Akihiko Kaji on drums and Haruki Nakayama on bass.