Kim Dong-hee

as Oh Ji-soo

10 episodes

Park Ju-hyun

as Bae Gyu-ri

10 episodes

Jung Da-bin

as Seo Min-hee

10 episodes

Nam Yoon-su

as Kwak Ki-tae

10 episodes

Kim Yeo-jin

as Lee Hae-gyoung

10 episodes

Choi Min-soo

as Lee Wang-cheol

10 episodes

Park Hyuk-kwon

as Cho Jin-woo

10 episodes

Seo Ye-hwa

as Na Seong-mi

10 episodes

Kim Kwang-kyu

as Byung-kwan

10 episodes

Baek Joo-hee

as Cho Mi-jun

10 episodes

Im Gi-hong

as Ryu Dae-yeol

10 episodes

Lee Hyun-gul

as Kkakdugi

10 episodes

Park Ho-san

as Oh Jung-jin

10 episodes

Shim Yi Young

as Gyu-ri's Mother

10 episodes

Kim Young-pil

as Gyu-ri's Father

10 episodes

Woo Da-vi

as Soo-ji

10 episodes

Lee Jae-Baek

as Kang Bbang

10 episodes

Lee Seung-wook

as Chae-bin

10 episodes

Kim Yi-kyeong

as Kim Ji-ye

10 episodes

Park Bo-Mi

as Cho Min-joo

10 episodes

Kwon Han-sol

as Hye-min

10 episodes

Kang Seol

as Lee Na-eun

10 episodes

Shin Myung-sung

as Lim Tae-woo

10 episodes

Min Bok-gi

as [Dean of students]

10 episodes

Lee Seung-woo

as Kyung-sik

10 episodes