Park Seo-jun

Ki-joon

Kwon You-na

Ye-jin's Sister

Lee Seung-hee

Gun-young

Shin An-jin

Professor

Hwang Chan-sung

Self

Cha Si-won

Student

Lee Eun-saem

Student

Jeong Da-eun

Hyo-jin

Oh Yu-jin

Eun-mi

Kim Gyu-baek

Young-choon's Gang Member

Byeon Woo-seok

Celebrity

Cho Joon

Koon-ho

Bae Yoo-ram

Jae-ho

Lee Ho-jung

Yoon-jeong

Go Joon

Young-choon

Park Ha-seon

Joo-hee

Sung Dong-il

Professor Yang

Kang Ha-neul

Hee-yeol

Lee Joon-hyuk

Professor Ha