O'quv guruhi — to'liq cast

Minhyun

as Yoon Ga-min

Park Yoon-ho

as Lee Hyun-woo

Cha Woo-min

as Phi Han-wool

Shin Su-hyun

as Lee Ji-woo

Hong Min-gi

as Park Geon-yeop

Lee Jong-hyun

as Kim Se-hyeon

Han Ji-eun

as Lee Han-kyung

Yun Sang-jeong

as Choi Hee-won

Gong Do-yu

as Lee Jun

Baek Seo-hoo

as Ma Min-hwan

Lee Gwang-hee

as Jeong Do-hoon

Kim Young-ah

as Jeon Mi Hyun

Jeong Jae-seong

as vice-principal (Yu-seong Tech)

Joo Yeon-woo

as Kim Soon-cheol

Cho Seung-yeon

as dean of academic affairs (Yu-seong Tech)

Jin Woo-jin

as Kim Gyu-Jin [Disciplinary Committee member]

Choi Ye-chan

Kim Min-ah

as Hwang Mi-Hee (Yu-seong Tech)

Lee Dong-Hoon

as Seo Yoo-bi

Kim Hwi-gyu

as No. 173