Bitter Sweet Hell

Composer

• 
  Park Se Jun

Director

• 
  Lee Dong Hyeon
• 
  Kim Seung Woo
• 
  Wi Deuk Gyu

Executive Producer

• 
  Kwon Sung Chang

Screenwriter

• 
  Nam Ji Yeon

Main Role

• 
  Kim Hee Sun

  No Yeong Won

  Main Role
• 
  Lee Hye Young

  Hong Sa Gang

  Main Role
• 
  Kim Nam Hee

  Choi Jae Jin

  Main Role
• 
  Yeon Woo

  Lee Se Na

  Main Role

Support Role

• 
  Hwang Chan Sung

  Noh Young Min [Young Won's younger brother]

  Support Role
• 
  Shin So Yool

  Oh Ji Eun [Plastic surgeon]

  Support Role
• 
  Jung Gun Joo

  Moon Tae Oh [Do Hyun's tutor]

  Support Role
• 
  Park Jae Chan

  Choi Do Hyun [Jae Jin and Young Won's son]

  Support Role
• 
  Kwon Hae Hyo

  Choi Go Myu [Jae Jin's father]

  Support Role
• 
  Choi Bo Kwang

  Ra Kyung [Young Won's secretary]

  Support Role
• 
  Ahn Kil Kang

  Park Kang Sung

  Support Role
• 
  Jung Heon

  Ku Kyung Tae

  Support Role
• 
  Lee Kyung Young

  [Young Won's father]

  Support Role
• 
  Han Sung Min

  So I

  Support Role
• 
  Han Sang Jo

  Park Seung Jae

  Support Role
• 
  Jung Woong In

  Jung Doo Man

  Support Role

Guest Role

• 
  Lee Hye Ra

  Ms. Kim (Ep. 1)

  Guest Role
• 
  Jung Dong Gyu

  Chairman Lee (Ep. 1)

  Guest Role
• 
  Kang Joo Hee

  [Chairman Lee's wife] (Ep. 1)

  Guest Role
• 
  Lee Joo Hyung

  [Detective] (Ep. 2)

  Guest Role
• 
  Park Soo Jin

  [Patient's mother] (Ep. 2)

  Guest Role
• 
  Bae Eun Woo

  [Ga Young's mom] (Ep. 2)

  Guest Role
• 
  Lee Yeon Joo

  [Do Hyun's teacher] (Ep. 2)

  Guest Role
• 
  Yeom Ji Hye

  [Award ceremony host] (Ep. 2)

  Guest Role
• 
  Na Ho Won

  [Delivery co. employee] (Ep. 2)

  Guest Role
• 
  Hwang Hyun Bin

  Young Ja (Ep. 3, 8)

  Guest Role
• 
  Ryu Tae Ho

  Hospital Director Kang (Ep. 3-4)

  Guest Role
• 
  Han Sang Chul

  [Restaurant owner] (Ep. 4)

  Guest Role
• 
  Kim Han Sang

  [Car center owner's friend] (Ep. 4)

  Guest Role
• 
  Yoo Young Bin

  Mr. Eogeuro (Ep. 5, 10)

  Guest Role
• 
  Yang Jae Young

  Sergeant Choi (Ep. 5)

  Guest Role
• 
  Kim Ga Bin

  [Reporter] (Ep. 5)

  Guest Role
• 
  Kwon Oh Jin

  [Boat captain] (Ep. 5)

  Guest Role
• 
  Kim Na Yoon

  Lee Se Na [Child] (Ep. 6)

  Guest Role
• 
  Kim Tae Gyum

  [Detective] (Ep. 6)

  Guest Role
• 
  Lee Gyu Bok

  [Professor] (Ep. 6)

  Guest Role
• 
  Kim Seung Jun

  [Se Na's dad] (Ep. 6)

  Guest Role
• 
  Moon Chae Young

  [Se Na's mom] (Ep. 6)

  Guest Role
• 
  Choi So Yool

  Min Hee (Ep. 7, 10)

  Guest Role
• 
  Park Yong

  Cha Min Gu (Ep. 8)

  Guest Role
• 
  Song Chang Gyu

  Detective Kim (Ep. 8)

  Guest Role
• 
  Kim Yeo Jin

  [So Yi's mom] (Ep. 8)

  Guest Role
• 
  Lee Eun Ju

  [Doctor] (Ep. 8)

  Guest Role
• 
  Im Ye Eun

  Maria (Ep. 9)

  Guest Role
• 
  Kim Min Sang

  [Detective] (Ep. 10)

  Guest Role
• 
  Choi Hee Do

  [Detective] (Ep. 10)

  Guest Role
• 
  Shin Hee Gook

  [Detective] (Ep. 10-11)

  Guest Role
• 
  Kim Young Mi

  Oh Ji Hwan's mom (Ep.10)

  Guest Role
• 
  Hong Joon Woo

  [Orphan] (Ep. 10)

  Guest Role
• 
  Song Won Su

  [Vacation home neighbor] (Ep. 10)

  Guest Role
• 
  Chu Eun Kyung

  [Counselor] (Ep. 10)

  Guest Role
• 
  Jang In Seok

  Dr. Moon (Ep. 10)

  Guest Role
• 
  Kim Ri Woo

  [Bloody psychiatric patient] (Ep. 10)

  Guest Role
• 
  Yoon Hyo Sik

  [Ji Hwan's dad] (Ep. 11)

  Guest Role
• 
  Lee Bum Chan

  [Bus station man] (Ep. 11)

  Guest Role
• 
  Jang Joon Young

  [Reporter] (Ep. 11-12)

  Guest Role
• 
  Park Ga Young

  [Reporter] (Ep. 11)

  Guest Role
• 
  Lee Yoon Sang

  [Doctors' assoc. member] (Ep. 12)

  Guest Role
• 
  Shin Yun Je

  Jun Ho

  Guest Role
• 
  Kim Sun Kyung

  Mrs. Choi

  Guest Role
• 
  Jeon Jin Ki

  No Sun Ho

  Guest Role
• 
  Yang Jae Hyun

  An Yo Seop

  Guest Role
• 
  Hong Ru Hyeon

  Kwak Sun Yeong

  Guest Role
• 
  Park Da On

  Choi Jae Jin [Child]

  Guest Role
• 
  Lee Ga Yeon

  No Yeong Won [Teen]

  Guest Role
• 
  Jeon Ji A

  No Yeong Won [Child]

  Guest Role
• 
  Lee Seul Yi

  [Yeong Won's mom]

  Guest Role
• 
  Park Hui Sun

  [Nun] (Ep. 7, 10)

  Guest Role
• 
  Seo Seung Hyun

  [Mrs. Choi's son] (Ep. 2)

  Guest Role
• 
  Han Seon Ae

  [Restaurant sommelier] (Ep. 10)

  Guest Role
• 
  Su Hyun

  [YouTuber of Mint Chocolate Team Is Going]

  Guest Role

Unknown

• 
  Kim Hwi Gyu Unknown
• 
  Lee Kyung Hoon Unknown