Extracurricular

Cinematography

• 
  Eom Hye Jeong

Composer

• 
  Hwang Sang Jun

Director

• 
  Kim Jin Min

Producer

• 
  Yoon Shin Ae

Screenwriter

• 
  Jin Han Sae

Main Role

• 
  Kim Dong Hee

  Oh Ji Soo

  Main Role
• 
  Park Ju Hyun

  Bae Gyu Ri

  Main Role
• 
  Jung Da Bin

  Seo Min Hee

  Main Role
• 
  Nam Yoon Su

  Kwak Ki Tae

  Main Role

Support Role

• 
  Choi Min Soo

  Lee Wang Cheol [Ji Soo's muscleman]

  Support Role
• 
  Park Hyuk Kwon

  Jo Jin Woo [Homeroom teacher]

  Support Role
• 
  Kim Yeo Jin

  Lee Hae Gyung [Police officer]

  Support Role
• 
  Kim Kwang Gyu

  Byung Kwan [Police officer]

  Support Role
• 
  Baek Joo Hee

  Cho Mi Jung [Brothel madam]

  Support Role
• 
  Im Ki Hong

  Ryu Dae Yeol [Mi Jung's fiancé]

  Support Role
• 
  Lee Hyun Kul

  Kkakdugi [Dae Yeol's associate]

  Support Role
• 
  Park Ho San

  O Jeong Jin [Ji Su's father]

  Support Role
• 
  Shim Yi Young

  [Gyu Ri's mother]

  Support Role
• 
  Kim Young Pil

  [Gyu Ri's father]

  Support Role
• 
  Woo Da Vi

  Soo Ji [Ji Soo's classmate]

  Support Role
• 
  Lee Jae Baek

  Kang Bbang [Ji Soo's classmate]

  Support Role
• 
  Lee Seung Woo

  Chae Bin [Ji Soo's classmate]

  Support Role
• 
  Seo Ye Hwa

  Na Sung Mi [Prostitute]

  Support Role
• 
  Kim Yi Kyeong

  Kim Ji Ye [Prostitute]

  Support Role
• 
  Park Bo Mi

  Cho Min Joo [Prostitute]

  Support Role
• 
  Kwon Han Sol

  Hye Min

  Support Role
• 
  Min Bok Gi

  [Dean of students]

  Support Role
• 
  Shin Myung Sung

  Lim Tae Woo

  Support Role
• 
  Cheon Dong Bin

  Jung Hwan

  Support Role
• 
  Choi Joon Kyu

  Chae Bin

  Support Role
• 
  Kang Seol

  Na Eun

  Support Role

Guest Role

• 
  Min Ha Ram

  [Barista] (Ep. 1)

  Guest Role
• 
  O Gyu Taek

  [Motel customer] (Ep. 1)

  Guest Role
• 
  Kim Tae Hoon

  [Motel owner] (Ep. 1-2)

  Guest Role
• 
  Kim Byung Hee

  Tae Nam [Sung Mi's client] (Ep. 1-2)

  Guest Role
• 
  Kwak Hee Joo

  Tae Rim (Ep. 4-5)

  Guest Role
• 
  Choi Dae Hoon

  Mr. Choi [CEO of Heaven Entertainment] (Ep. 4-5)

  Guest Role
• 
  Oh Gwang Rok

  Jae Ik [Wang Cheol's military mate] (Ep. 9-10)

  Guest Role
• 
  Moon Soo Ho

  [Yangachi High School Student]

  Guest Role
• 
  Kim Shi Won

  [Bully]

  Guest Role
• 
  Jeon Yeong In Guest Role
• 
  Kim Yo Han Guest Role
• 
  Kim Jang Won

  [Idol]

  Guest Role
• 
  Jang Se Rim

  Yoo Eun Chae (Ep. 1,3-4, 6-7)

  Guest Role
• 
  Yeon Bo Ra

  [Math teacher]

  Guest Role
• 
  Shin Ki Hwan

  Ma Heum Yeok

  Guest Role
• 
  Noreen Joyce Guerra

  Lee So Young [Student]

  Guest Role
• 
  Joo Jae Hyeon

  [1st year class 3 student]

  Guest Role

Unknown

• 
  Kim Mo Bum Unknown
• 
  Moon Hak Jin Unknown
• 
  Kwak Ye Heon Unknown
• 
  Yoo Ji Yeon Unknown