In this warmhearted romantic comedy, a mistaken identity leads to a blossoming romance between two boys. Aoki has a crush on Hashimoto, the girl in the seat next to him in class. But he despairs when he borrows her eraser and sees she's written the name of another boy-Ida-on it.

To make matters more confusing, Ida sees Aoki holding that very eraser and thinks Aoki has a crush on him!Aoki has a crush on Ida, a boy in his class. Aoki is on cloud nine to be dating Ida, but he's in trouble when it comes to his grades and starts attending a cram school. But for some reason, one of the instructors there starts giving Aoki lessons on love?!