Kieta Hatsukoi (2021)

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! Adapted from the manga "Vanishing My First Love" (消えた初恋) written by Hinekure Wataru (ひねくれ渡) and illustrated by Aruko (アルコ).