Chaerin Baek (백채린 Baek Chae-rin) is a supporting character in Questism, and the possible love interest of the protagonist, Suhyeon Kim. She is currently a 2nd-year student at West Gangbuk High.
When Chaerin was in middle school, she was bullied by other students for having a resting bitch face. When she ignored them, bullying her came to be seen as cool, until one day when they trapped her in the janitor's closet and went home without letting her out. The bullying became worse.