Cast
Park Yoon-ho
Lee Hyun-woo
Minhyun
Yoon Ga-min
Cha Woo-min
Phi Han-wool
Han Ji-eun
Lee Han-kyung
Lee Jong-hyun
Kim Se-hyeon
Shin Su-hyun
Lee Ji-woo
Yun Sang-jeong
Choi Hee-won
Park Yoon Ho
Lee Hyeon-u
Gong Do-yu
Lee Jun
Hong Min-gi
Park Geon-yeop
Baek Seo-hoo
Ma Min-hwan
Lee Kwang-hee
Jeong Do-hoon
Kim Young-ah
Jeon Mi Hyun
Jeong Jae-seong
vice-principal (Yu-seong Tech)
Joo Yeon-woo
Kim Soon-cheol
Cho Seung-yeon
dean of academic affairs (Yu-seong Tech)
Jin Woo-jin
Kim Gyu-Jin [Disciplinary Committee member]
Choi Ye-chan
Kim Min-ah
Hwang Mi-Hee (Yu-seong Tech)
Lee Dong-Hoon
Seo Yoo-bi
Kim Hwi-gyu
No. 173
