Shin Hye-sun

So Si-min

신혜선

Lee Jun-young

Han Su-gang

이준영

박정우

Ko Jin-hyoung

Park Hyeok-kwon

So Young-taek

박혁권

Cha Chung-hwa

Lee Jae-gyeong

차청화

Son Sook

Jin-hyoung's Grandmother

손숙

Lee Joong-ok

Seo Sang-woo

이중옥

Lee Chan-hyeong

Lee Gwon-joong

이찬형

Bae Hyeon-jun

Byeong-jin

차우민

Lee Moon-gi

Kim Sang-woo

Park Jung-ho

Lee Tae-hee

Kim Jeong-gyu

Lee Tae-gyun

Byun Jae-hyeok

강안나

Song Eun-gyo

강나루

Min-ji

Lee Gyu-hoe

Head Teacher

이규회

동효희

English Teacher

Nam Jeong-woo

Math Teacher

Kim Gyeong-ryong

Principal

김경룡

이도은

Hye-gyeong

최리호

Chauffeur

이주미

Costume manager

이승민

Min-seung

김동혁

Lawyer