"The First Love That Disappeared" is a romantic comedy that begins with a misunderstanding between a high school boy and girl. Aoki Shota is a slightly clumsy boy who has a crush on the girl sitting next to him, Hashita. One day, Aoki borrows an eraser from Hashita, but sees a heart drawn on it and the name of a boy from the same class, Ida. However, Ida sees the eraser and mistakenly thinks it belongs to Aoki, thinking that Aoki likes him...