上之山立夏，某日的午休在训练场遇到了午睡的佐藤真冬。自从帮助真冬修好吉他以来，真冬一直缠着立夏让立夏教他弹奏吉他。真冬对于吉他的执着感情让立夏想起了在某些地方已经冷却掉了的对音乐的热情

立夏向同乐队的成员中山春树和梶秋彦介绍了真冬。收到了两人的建议后，立夏决定教真冬吉他。真冬对于第一次弹吉他而感到掩饰不住的兴奋。某天，春树和秋彦告诉了真冬做音乐时所必需的东西。

立夏受到真冬歌声的冲击，邀请真冬加入乐队，但却被真冬拒绝了。不死心的立夏再次邀请真冬，但真冬却依然选择了逃避。某日在乐队的练习中，立夏被春树告诫了要如何与真冬相处。

真冬终于决定加入乐队。立夏为了给真冬哼唱的歌曲谱曲，久违地埋头于吉他。正在打工的春树被前来的朋友矢岳光司邀请去参加LIVE。像往常一样在学校教真冬吉他的立夏，邀请了真冬去看效果器。

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.

Ritsuka realizes how he truly feels and ends up taking out his frustrations and confusion on Mafuyu. Ritsuka ends up talking to Akihiko, who tells him that what he’s feeling is completely normal, but Ritsuka still wonders if it’s okay to admit these feelings. As Akihiko watches over Ritsuka and Mafuyu, he remembers his past with Ugetsu.

As the day of the live show approaches, the season heads into the rainy season and the high school boys have finals. While Mafuyu has trouble coming up with lyrics, he gets visited by his childhood friend, Hiiragi Kashima, who was also Yuki’s childhood friend.

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...

Ritsuka comes to the realization that he was so worked up at the concert that he kissed Mafuyu. Ritsuka hears that Mafuyu didn’t come to school because he had a fever, so he decides to go visit him. The next day, Mafuyu is feeling better and the band gets together to celebrate his recovery and to try to figure out their future as a band and figure out a name for their band.

Mafuyu tells Ritsuka that he likes him and Ritsuka is ecstatic to find out that they both like each other but at the same time, he remembers himself saying that band members should never bring relationships into the band. However, they both decide to talk to Haruki and Akihiko about it. Haruki gives them a lecture and Akihiko congratulates them. Meanwhile, Haruki, who likes Akihiko...