Dokidoki DO! Remi

Overview

Remi-chan's first love is a boy she doesn't even know the name of who she met at a bazaar half a year ago. She always wore the glass pendant that he secretly gave her and dreamed of the day they could meet. And half a year later, in the new semester. A strange boy enters her class!? The transfer student was her first love!! His name is Sora!! It was Remi-chan who unintentionally screamed out loud, but it seems he doesn't remember Remi-chan!? No way!! (Source: Shogakukan, translated)

Source: AniList