Ritsuka Uenoyama is an excellent guitarist and high school student. One day as he's heading up the stairs to go to the roof, he discovers a mysterious student sitting on the stairs holding a Gibson with broken strings named Mafuyu Sato. Mafuyu persistently asks Ritsuka to teach him guitar and Ritsuka ends up bringing him to the band practice of his band, "the seasons." Ritsuka performs for Mafuyu along with his bandmates, the drummer Akihiko Kaji and bassist Haruki Nakayama. Ritsuka's face is beaming as he performs...