So Si-min

신혜선

Acting

Han Su-gang

이준영

Acting

Ko Jin-hyoung

박정우

Acting

So Young-taek

박혁권

Acting

Lee Jae-gyeong

차청화

Acting

Jin-hyoung's Grandmother

손숙

Acting

Lee Gwon-joong

이찬형

Acting

Byeong-jin

Bae Hyeon-jun

Acting

Lee Moon-gi

차우민

Acting

Park Jung-ho

Kim Sang-woo

Acting

Kim Jeong-gyu

Lee Tae-hee

Acting

Byun Jae-hyeok

Lee Tae-gyun

Acting

Song Eun-gyo

Kang Anna

Acting

Min-ji

강나루

Acting

Head Teacher

이규회

Acting

Seo Sang-woo

이중옥

Acting

English Teacher

Dong Hyo-hee

Acting

Math Teacher

Nam Jeong-woo

Acting

Principal

김경룡

Acting

Hye-gyeong

이도은

Acting

Chauffeur

최리호

Acting

Costume manager

이주미

Acting