After watching the movie, Yuki Onmura (Goya Kiyohara), a freshman in the Department of Sociology, silently stared at Hiroyuki Tokunaga (Yuto Sano) who remained silent and continued eating popcorn indifferently.Yuki then threw the empty popcorn box into the trash can.Tears filled her eyes for some reason... Then Yuki opened the diary of her life when she met Guanghai...

In April two years ago, Yuxi, who was a junior in college, was walking around the campus in the new semester. Two years of ordinary college life had passed. How should she spend the remaining two years without regrets? Her heart was filled with confusion..At this time, a boy appeared in front of her. He was concentrating on writing calculations under the cherry blossom tree.In the spring breeze, their eyes met each other quietly.This is the first encounter between Yuki and Guanghai.

However, the next moment, Guanghai left in a hurry, not even taking the guitar aside.Yuki didn't know the boy's name. In order to find the owner of the guitar, she started a search journey with her classmates Shiraishi Mahiru (Yoshikawa Ai) and Hasegawa Airi (Mikami Ai).

On the other hand, Hiroyuki forgot his wallet in his guitar, and when he was queuing up to check out in the cafeteria, he stood there awkwardly because he had no money to pay. He was helped by Toranosuke Wada (played by Ayumu Mochizuki) whom he met for the first time.After learning about Guanghai's situation, Toranosuke immediately offered to replace Guanghai, who had lessons, to find the guitar...