Satoshi Shinohara (Nijiro Murakami) is a senior high school student at Aoba Kita High School. One day, when he was playing guitar by the river, he was seen by the transfer student Rin Moriyama (Enka Yoshida) who happened to pass by. Moriyama was attracted by the outstanding musical talent shown by Azhi and strongly invited Azhi to join the school band and participate in the school festival performance. After half-heartedly, Azhi agreed. In this way, Azhi became a member of the school band and began to prepare for the school festival performance. During this process, Moriyama was always by his side, supporting and encouraging him. In the end, the band's performance was a great success, but at the same time, Moriyama fell ill. Moriyama suffered from an incurable disease. When she was lying weakly on the hospital bed, Azhi chose to confess to her. Although he liked Azhi in his heart, Moriyama still refused.