Jeong Jae-seong

Karakter: Na Byeong-mo

Karakter: Lee Bong-seok

Karakter: Choi Chang-soo

Karakter: vice-principal (Yu-seong Tech)

Karakter: Baek Cheol-gyu

Karakter: Marshal Kim

Karakter: Park Yoongab

Karakter: Seon-ho's father

Karakter: No Hak-Su

Karakter: Chief neurosurgeon

Karakter: Kwon Suk

Karakter: Yoon Sang-tae

Karakter: Lee Woo-taek

Karakter: [Oh Sol’s boss]

Karakter: Pharm