High Class

Director

• 
  Ashbun

Producer

• 
  Jung Se Ryung

Main Role

• 
  Cho Yeo Jung

  Song Yeo Ul

  Main Role
• 
  Kim Jee Soo

  Nam Ji Sun

  Main Role
• 
  Park Se Jin

  Hwang Na Yun

  Main Role
• 
  Ha Joon

  Danny O

  Main Role
• 
  Gong Hyun Joo

  Cha Do Yeong

  Main Role

Support Role

• 
  Lee Ka Eun

  Rachel Cho [HSC International School teacher]

  Support Role
• 
  Lee Chae Min

  An Seung Jo [Ji Sun's assistant]

  Support Role
• 
  Kim Young Jae

  Lee Jeong U [Ji Sun's husband / Plastic surgeon]

  Support Role
• 
  Choi Bo Geun

  Lee Jun Mo [Ji Sun's son]

  Support Role
• 
  Yoon In Jo

  Yeong Ju

  Support Role
• 
  Choi Sung Joon

  Kwak Sang Gun [Do Yeong's husband]

  Support Role
• 
  Seo Jung Yeon

  Sim Ae Sun [VIP-only maid]

  Support Role
• 
  Jang Sun Yool

  An I Chan [Yeo Ul's son]

  Support Role
• 
  Kim Ji Yoo

  Lee Jun Hui [Ji Sun's daughter]

  Support Role
• 
  Park So Yi

  Hwang Jae In [Na Yun's daughter]

  Support Role
• 
  Seo Yun Hyuk

  Kwak Si U [Sang Gun's & Dong Young's son]

  Support Role
• 
  Kang Yeon Jung

  Seong Gyeong A

  Support Role
• 
  Woo Hyun Joo

  Do Jin Sul

  Support Role
• 
  Kwon Hyuk

  Gu Yong Hoe

  Support Role
• 
  Kim Sung Tae

  Alex Comer

  Support Role
• 
  Kim Nam Hee

  An Ji Yong

  Support Role
• 
  Han Seung Won

  Jung Mi Do [Chef]

  Support Role

Guest Role

• 
  Park Eun Hye

  [Ji Sun's sister] (Ep. 1)

  Guest Role
• 
  Lee Ja Ryoung

  [Gangnam school teacher] (Ep. 1)

  Guest Role
• 
  Lee Tae Ho

  [HSC International School interviewer] (Ep. 1)

  Guest Role
• 
  Lee Seung Hyung

  [Yeo Ul's co-worker] (Ep. 1, 3)

  Guest Role
• 
  Cha Ji Won

  [Interview translater] (Ep. 1, 15)

  Guest Role
• 
  Hong Suk Bin

  [Ashbun Townhouse staff] (Ep. 2)

  Guest Role
• 
  Jeon Yeo Jin

  [Staff] (Ep. 2)

  Guest Role
• 
  Park Seon Joo

  [Parent] (Ep. 3)

  Guest Role
• 
  Oh Ji Yeon

  [Parent] (Ep. 3)

  Guest Role
• 
  Seon Yul U

  [Detective] (Ep. 3)

  Guest Role
• 
  Lee Young Jin

  [Chef] (Ep. 4)

  Guest Role
• 
  Kim Jin

  [Florist] (Ep. 6)

  Guest Role
• 
  Kim Yong Jin

  [Administration staff] (Ep. 6, 9)

  Guest Role
• 
  Han Bo Reum

  [Do Yeong's old friend] (Ep. 7)

  Guest Role
• 
  Song Hoon

  [Nam Ji Sun's ex-husband] (Ep. 7)

  Guest Role
• 
  Jang Ga Hyun

  [Saleswoman] (Ep. 7)

  Guest Role
• 
  Bae Yoo Ri

  [Nam Ji Sun's ex-husband's wife] (Ep. 7)

  Guest Role
• 
  Kim Si Kook

  [Cellphone store employee] (Ep. 1)

  Guest Role
• 
  Jang Woo Yeon

  [Music teacher] (Ep. 6, 9)

  Guest Role
• 
  Choi Moon Kyung

  [Nurse] (Ep. 7)

  Guest Role
• 
  Hong Dae Sung

  [Police officer] (Ep. 7)

  Guest Role
• 
  Park Yong

  [Priest] (Ep. 8)

  Guest Role
• 
  Jang Joon Ho

  [Station chief] (Ep. 9)

  Guest Role
• 
  Jung Hyun Seok

  [Doctor] (Ep. 10)

  Guest Role
• 
  Kim Oh Bok

  [Security Company employee] (Ep. 10)

  Guest Role
• 
  Jung Young Joo

  Maggie Chen [Wan Chai group] (Ep. 11)

  Guest Role
• 
  Park Se Hoon

  [Airport staff] (Ep. 12)

  Guest Role
• 
  Kim Ki Ryung

  [Restaurant customer] (Ep. 13)

  Guest Role
• 
  Kim Bi Bi

  [Nurse] (Ep. 13)

  Guest Role
• 
  Kim Ji Su

  [Nurse] (Ep. 13)

  Guest Role
• 
  Park Ga Young

  [EOS plastic surgery staff] (Ep. 13-14)

  Guest Role
• 
  Yoon Tae In

  Bang Sae Ron (Ep. 13-14)

  Guest Role
• 
  Kim Sang Il

  [Administration staff] (Ep. 13, 15)

  Guest Role
• 
  Kyung Da Eun

  Hwang Na Yun [Child] (Ep. 14)

  Guest Role
• 
  Yoon Bok Sung

  [Board member] (Ep. 14)

  Guest Role
• 
  Choi Yi Sun

  [Filming staff] (Ep. 14)

  Guest Role
• 
  Lee Seung Joon

  Han Ju Won (Ep. 15)

  Guest Role
• 
  Jung Hyun Woo

  [Medical examiner] (Ep. 15)

  Guest Role
• 
  Kim Do Young

  [Attorney] (Ep. 15)

  Guest Role
• 
  Lee Joo Young

  [Reporter] (Ep. 16)

  Guest Role
• 
  Bret Allan Lindquist

  [Yacht pilot] (Ep. 16)

  Guest Role
• 
  Song Ha Rim

  [Illegal driver] (Ep. 16)

  Guest Role
• 
  Oh Ki Hwan

  [Prosecutor] (Ep. 16)

  Guest Role
• 
  Kim Geon Woo

  Henry Chen

  Guest Role
• 
  Li Yong Qun

  Simon Chen

  Guest Role
• 
  Park Sung Hwan

  Detective Shin

  Guest Role
• 
  Choi Se in

  [Student]

  Guest Role
• 
  Jeon Soo Yeon

  [Parent]

  Guest Role
• 
  Park Ok Chool

  [Restaurant owner]

  Guest Role
• 
  Baek Ji Won Guest Role
• 
  Cho Won U

  [Student]

  Guest Role