Moon Woo-jin

Kim Yi-Joon

Choi Hyeon-jin

Jung Ji-Wook

Jung Hee-tae

Kim Yi-Joon's uncle

Heo Dong-won

Kim Yi-Joon's father

Kim Kwang-kyu

principal

Jung Yi-rang

Han Yeo-Reum's mother

Jeon Seok-chan

Han Yeo-Reum's father