Park Ji-hoon
Yeon Si-eun
Yeon Shi-eun is a model student, who ranks at the top at his school. Physically, he appears like a weak boy, but, by using his smarts, tools, and psychology, he fights against violence that takes place inside and outside of his school.
Yakhan yeongung
Yeon Si-eun
Ahn Su-ho
Oh Beom-seok
Kang Woo-young
Choi Hyo-man
Park Hu-min
Yeong-i
Seo Jun-tae
Jeon Yeong-bin
Jeon Seok-dae
Na Baek-jin
Go Hyun-tak
Geum Seong-je
Lee Jeong-chan
Basketball club member 3
Han Tae-hoon
Kim Gil-su
Seung-min
Baek Dong-ha
Do Seong-mok
