Satoshi (Nijiro Murakami) is in the 3rd year of high school. He and transfer student Rin (Madoka Yoshida) are busy forming a band to perform at the school cultural festival even though there is a ban on forming bands at school. They perform live at the school cultural festival, but Rin later collapses. Tragedy ensues for Rin and Satoshi becomes devastated.
Satoshi then goes back in time to when he met Rin for the first time.
Based on the light novel "Nidome no Natsu, Nidoto Aenai Kimi" by Hirotaka Akagi (published January 20, 2015 by Shogakukan).
