Lim Ju-kyung
Lee Su-ho
Han Seo-jun
Kang Soo-jin
Lim Hee-kyung
Lim Jae-pil
Hong Hyun-suk
Han Joon-woo
Lim Ju-young
Choi Soo-a
Kim Cho-rong
Young Im Hee-kyung
Jeong Se Yeon [Su Ho & Seo Jun's friend]
[Music teacher]
Jin Hee Jung [Seobom High freshman student bully]
