Dark Hole

Kim Ok-vin

Lee Hwa Sun

Lee Jun-hyuk

Yoo Tae Han

Yoon Jung-hoon

Woo Sang

Park Keun-rok

Choi Seung Tae

Jang Sung-won

Lee Young Tae

Lee Ha-eun

Yoon Saet Byeol

Kim Byeong-gi

Choi Gyeong-su

Oh Yu-jin

Han Dong Rim

Song Sang-eun

Song Sang Eun Kim Seon Nyeo / "Sunnyeo" / "Madame Kim"

Lee Ye-bit

Jung Do Yoon

Bae Jung-hwa

Han Ji Soo

Im Won-hee

Park Soon Il

Zo Zee-an

Cho Hyun Ho

Kim Do-hoon

Lee Jin Seok

Kim Su-ol

Yoon Ji Ae

Heo Hyung-kyu

Kang Sung Beom

Jang Myung-kap

Son Dong Goo

Na Se-na

Teacher Na Se-na

Yun Seul

Kim Bo-eun

You Chae-eun

Nurse

Jeong Hyun-ji

Nurse

Park Xi-yeon

Student