Backstreet Rookie

Kim Sun-young

Kong Boon-hee

Eum Moon-suk

Han Dal Sik

Seo Ye-hwa

Hwang Geum Bi

Lee Joo-ha

Oh Hyeon-ji

Yoo-jung Kim

Jeong Saet-byeol

Ji Chang-Wook

Choi Dae Hyun

Han Sun-hwa

Yoo Yeon Joo

Lee Byung-joon

Choi Yong-pil

Sol-bin Ahn

Jung Eun-byul

Jae-Ho Heo

Department Head Bae

Sang-woo Do

Jo Seung-joon

Yoon Soo

Cha Eun Jo

Mi-ri Gyeon

Kim Hye-ja (Yeon-joo's mother)

Min-kyu Kim

Kang Ji-wook

Woo Hyeon

Kwon Eui-choo

Kim Ji-Hyeon

Choi Da Soon (Dae Hyun's sister)

Yoon-Hee Lee

Cha Ki-bok

Bae Gi Beom

Ko Kwang Tae