Aejoon, a high school teacher who's a die hard fan of Siyeol, a member in the national idol group A1 (Aone). "I went to work with a heavy heart like always and left behind my love for Siyeol, but for no reason, out of nowhere, my bias came to my school! However, my bias' actions are suspicious because it looks like he's trying to seduce me...?" Original Webtoon