Pogyeomjoouibo

Moon Woo-jin

Kim Yi-Joon

Park Seo-Kyung

Han Yeo-Reum

Choi Hyeon-jin

Jung Ji-Wook

Kim Ji-seong

Kim Yi-Joon's aunt

Jung Hee-tae

Kim Yi-Joon's uncle

Heo Dong-won

Kim Yi-Joon's father

Kim Kwang-kyu

principal

Kim Ji-won

Min-Ji

Go Seung Bo

Kyung-Tae

Jung Yi-rang

Han Yeo-Reum's mother

Jeon Seok-chan

Han Yeo-Reum's father