Bada

Vocal Trainer

Stephanie Kim

Music Producer

Lee Soon-jae

Principal

Kim Hee-chul

Homeroom teacher

Lee Hae-in

Natty

Jo Yu-ri

Jang Gyu-ri

Lee Nagyung

Lee Saerom

Song Hayoung

Park Jiwon

Roh Jisun

Lee Chaeyoung

Baek Jiheon

Lee Seoyeon

Lee Young-yoo

Joo Se-Bin

이시안