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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).

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...

Mafuyu finally decides to join the band. In order to compose a song to go along with the little tidbit that Mafuyu sang for him, Ritsuka dives back into playing guitar nonstop. Haruki is at his part-time job one day when his friend Koji Yatake comes by and asks him if he and his band would like to appear in a live show he’s putting on. Ritsuka is teaching Mafuyu guitar at school as usual and then invites Mafuyu to go look at effect pedals with him.

It is decided that Ritsuka and the rest of his band are doing a live show. Haruki and Akihiko go out drinking and talk about Ritsuka and Mafuyu. Since Akihiko had ridden his motorcycle into town, he asks to spend the night at Haruki’s place and Haruki thinks back on the first time they met. That was right around the time Haruki’s old band had disbanded and he had first encountered Ritsuka, who had just entered his third year of middle school...

Ritsuka hears a rumor that the person that Mafuyu used to date had died and is a bit shaken. Ritsuka couldn’t build up the courage to ask Mafuyu about it, but then, Akihiko visits his place. Akihiko then suggests that Mafuyu write the lyrics for the song Ritsuka had made. Ritsuka was thinking the same thing, and at the next band practice, asks Mafuyu if he’d do it.