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Park Seon-yoo

Choi Ro-woon

Ahn Jeong-gook

양소민

Yoon Na-hee

김선화

Jeong-gook's Mother

이휘종

Homeroom Teacher Hong

이선희

In-kyeong

원미원

Grandmother

Lee Do-hyeon

Seon-yoo's Father

Kim Tae-won

Hyo-joon

조용진

Sang-jin

Won Yoon-seo

Hyeon-ah

Hwang Si-yeon

Si-yeon

Ahn Ji-hyeon

Ji-hyeon

유성민

Sung-min

김건

Geon

Seong Yeo-jin

Supermarket Owner

이자령

School Nurse

서광재

Butcher

Kwon Yeong-gook

School Sheriff

Kim Joong-ki

Taxi Driver