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Sim Hee-seop

Dong-jun

Hong Xa-bin

Young Dong-jun

Shin Joo-hyup

Young Kang-hyeon

Kim So-hee

Young Dong-hee

Kang Chae-yun

Yeong-ji 1

Kim Joo-ryoung

Dong-jun's Mother

Kim Hak-seon

Dong-jun's Father

Kwon Ji-woo

Ju-ho

Ok Ji-young

Yun-ju

Kwon Dong-ho

Seong-il

Song Chang-eui

Kang-hyeon

Woo Mi-hwa

Academy director