ONE: High School Heroes

Shin Jun-seop

as

Nam Seung-Sik

Shin Jae-hwi

as

Lee Ki-Yoon

Lee Jung-ha

as

Kim Eui-gyeom

Kim Do-wan

as

Kang Yoon-ki

Kim Sang-ho

as

Kim Seok-tae

Kim Joo-ryoung

as

Myeong Da-bin

Lim Sung-kyun

as

Kim Seung-joon

Yuk Jun-seo

as

Lee Geol-jae

Yoo Hee-je

as

Choi Ki-soo

Lim Hyun-tae

as

Choi Hong-il

Lee Chan-hyeong

as

Sung-Wook

Hong Min-gi