as

vice-principal (Yu-seong Tech)

as

Baek Cheol-gyu

as

Kim

as

Han Kyung-rok

as

Kim Byeong-chan

as

Pyo Dong-ho

as

Seon-ho's father

as

Park Yoongab

as

Marshal Kim

as

Yuk Si-gyeong

as

Kim Min-sub

as

No Hak-Su

as

Deok Chul's father

as

Kong Ji-cheol

as

[Chief neurosurgeon]

as

Kang Mong-koo

as

Kim In-Joo

as

Kwon Suk

as

Bae Sang-bok

as

Jo Se-hyeon

as

Representative Goo

as

Lee Woo-Taek

as

[Oh Sol’s boss]

as

Yoon Sang-tae

as

Pharm

as

Container Oya