Park Seo-jun
Ki-joon
Kang Ha-neul
Hee-yeol
Sung Dong-il
Professor Yang
Park Ha-seon
Joo-hee
Go Joon
Young-choon
Lee Ho-jung
Yoon-jeong
Bae Yoo-ram
Jae-ho
Cho Joon
Koon-ho
Byeon Woo-seok
Celebrity
Kim Kyu-baek
Young-choon's Gang Member
Oh Yu-jin
Eun-mi
Jeong Da-eun
Hyo-jin
Lee Eun-saem
Student
Cha Si-won
Student
Hwang Chan-seong
Self
Shin An-jin
Professor
Jeong Dong-hoon
Student
Lee Seung-hee
Gun-young
Kwon You-na
Ye-jin's Sister
Lee Jun-hyeok
Professor Ha