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).

Ritsuka introduces Mafuyu to his other bandmates, Haruki and Akihiko. After some convincing from the other two, Ritsuka finally agrees to teach Mafuyu how to play guitar. Mafuyu is so excited about playing guitar for the first time that he can’t hide his excitement. One day, Haruki and Akihiko tell Mafuyu the most important thing about playing music...

Ritsuka is floored after hearing Mafuyu’s singing voice and invites him into the band, but Mafuyu declines. Ritsuka just can’t take no for an answer and keeps trying to invite Mafuyu into the band, but now, Mafuyu is avoiding him. Then during band practice, Haruki asks Ritsuka to actually think about if he ever thought about how Mafuyu felt...

On the day of the concert Ritsuka and Mafuyu get into a little spat and one of the strings on Mafuyu’s guitar breaks. Haruki tells Ritsuka to run and buy new strings, and Ritsuka then realizes that Mafuyu’s been trying to do everything he had been asking him to do this whole time. As he replaces Mafuyu’s strings, he tells Mafuyu how he feels. Even though there are still no lyrics done, their time to perform finally arrives, and...