What happened to Sowon and Yerin in the past?

Character introduction

자까

Character introduction!! Time

소원

Name: Sowon, Age: 13, Personality: Calm, Role: Bullied, Yerin's older sister

예린

Name: Yerin, Age: 12 years old, Personality: Lively, Role: Popular girl, Sowon's younger sister

엄지(일진)

Name: Umji, Age: 13, Personality: Bullying, Role: Bully

은하

Name: Eunha, Age: 12 years old, Personality: Always changing, Role: Yerin's best friend

라이관린

Name: Guan Lin, Age: 13, Personality: Ae Do, Always changing, Role: Yerin's boyfriend

엄마

Name: Jung Yu-jin, Age: 34, Personality: Bad but kind, Role: Ye-rin, So-won's mother

지성쌤

Name: Yoon Ji-sung, Age: 25 years old, Kind and affectionate personality, Role: Yerin, So-won's teacher"

해설자

Commentator