Jo Seo-yeon

Park Seon-yoo

Choi Ro-woon

Ahn Jeong-gook

Yang So-min

Yoon Na-hee

김선화

Jeong-gook's Mother

Lee Hwi-jong

Homeroom Teacher Hong

이선희

In-kyeong

Won Mi-won

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

Kim Geon

Geon

Jung Yeon-kyung