Kim Soo-hyun

Han Jae-ta

Park Bo-young

Lee Eun-su

Jang Ki-bum

Han Dong-hee

Min-ji

Kang-seul

Kim C

Jae-ta's Uncle

Chan-seong

Park Yeong-sam

Seo Hye-jin

Na Mi-rae

Kim Hee-chan

Kim Jeong-gyun

homeroom teacher