Mio Imai (Haru) came to Tokyo from Yamanashi to pursue her dream of becoming a manga writer. 3 years ago, she made her debut as a manga writer. Since then, she has written a manga and now works as an assistant to another manga writer. One day, she receives an email about an upcoming middle school reunion. She graduated from her middle school 14 years ago. Mio Imai returns to Yamanashi and attends her middle school reunion. There, she meets 5 friends from her middle school days: Shuichi Amemiya (Kento Hayashi), Ryo Fukazawa (Junpei Mizobata), Reiko Honda (Yuika Motokariya), Nanae Iwasaki (Yua Shinkawa) and Yuumi Nose (Tomoka Kurokawa). Everyone at the reunion has a good time together. Shuichi Amemiya suggests they should dig out the time capsule they buried on their middle school graduation day. The friends go to their middle school and retrieve the time capsule. Mio Imai picks out a note among the items in the time capsule. The note states "Everyone won't forget Yuki Nakano," but the 6 friends there can't remember Yuki Nakano's face.