"Who would you choose?" [Sachaeng/Michaeng] {COMPLETED}

So for this story, Chaeyoung is a guy, again. And he's a nobody in JYP High. He's newly transferred to JYP High for some personal reasons. Some characters' personality: Chaeyoung: A simple-minded person, doesn't speaks up to strangers, like to be alone and people always call him loner, has a big secret only Tzuyu and...