Byul-ah, that's not okay (Mamamoo)

introduction

휘인

Middle school 3rd grader. Byul and Hyejin's best friend. Active and friendly.

별이

Middle school 3rd grader. Wheein and Hyejin's best friend. Acts outgoing but is actually quiet. Shy.

혜진

Middle school 3rd grader. Wheein and Byul's best friend, My Way, is very stubborn. Not shy at all.

용선

Byul's older sister is Seong-in. Byul lives with Yong-seon, not her parents.

Okay. Let's start!?