Wonderful World

Director

• 
  Lee Seung Young

Executive Producer

• 
  Kwon Sung Chang

Screenwriter

• 
  Kim Ji Eun

Main Role

• 
  Kim Nam Joo

  Eun Soo Hyun

  Main Role
• 
  Cha Eun Woo

  Kwon Seon Yul

  Main Role
• 
  Kim Kang Woo

  Kang Soo Ho

  Main Role
• 
  Im Se Mi

  Han Yoo Ri

  Main Role

Support Role

• 
  Won Mi Kyung

  Oh Go Eun [Soo Hyun’s mom]

  Support Role
• 
  Kang Ae Sim

  Jang Hyung Ja [Soo Hyun’s fellow inmate]

  Support Role
• 
  Yang Hye Ji

  Hong Soo Jin [Seon Yul's best friend]

  Support Role
• 
  Kim Woo Hyun

  Park Yong Gu [Seon Yul’s junkyard colleague]

  Support Role
• 
  Jin Geon U

  Kang Tae Ho [Soo Ho’s younger brother]

  Support Role
• 
  Kil Hae Yeon

  Jung Myung Hee [Soo Ho’s mom]

  Support Role
• 
  Sung Ji Ru

  Han Sang [Former detective]

  Support Role
• 
  Park Hyuk Kwon

  Kim Jun [United Party of Korea’s representative]

  Support Role
• 
  Lee Ji Yeon

  [Kim Jun’s secretary]

  Support Role
• 
  Cha Soo Yeon

  Yoon Hye Geum [Soo Hyun’s neighbor]

  Support Role
• 
  Jin Jae Hee

  Yoon Hee Jae [Hye Geum’s son]

  Support Role
• 
  Oh Man Seok

  Kwon Ji Woong [Construction company CEO]

  Support Role
• 
  Lim Ji Sub

  Kwon Min Hyeok

  Support Role
• 
  Jeon Hyun Ah

  Kim Si Ra [Psychology professor]

  Support Role
• 
  Kang Myung Joo

  Kim Eun Min

  Support Role
• 
  Kim Chul Ki

  Choi Joo Seok [National Assembly member]

  Support Role
• 
  Lee Joon

  Kang Geon Woo

  Support Role
• 
  Jeon Jeong Il Support Role
• 
  Heo Jin Support Role

Guest Role

• 
  Ha Dong Joon

  Park Sung Joon [Judge] (Ep. 1-2)

  Guest Role
• 
  Park Si Hyun

  [Doctor] (Ep. 1)

  Guest Role
• 
  Lee Won Hee

  [Prosecutor] (Ep. 1)

  Guest Role
• 
  Seo Ji Won

  [ABS manager] (Ep. 1)

  Guest Role
• 
  Kim Kwon

  [Lawyer] (Ep. 1-2)

  Guest Role
• 
  Shin Min Soo

  Lee Jing Won (Ep. 2)

  Guest Role
• 
  Kim Chae Hyun

  [Lawyer] (Ep. 2)

  Guest Role
• 
  Choi Eun Kyoung

  [Prisoner] (Ep. 2)

  Guest Role
• 
  Lee Myung Ha

  [Prison guard] (Ep. 2)

  Guest Role
• 
  Kim Jin Kyu

  [HMC News PD] (Ep. 2)

  Guest Role
• 
  Jeong Seo Yeon

  [Prisoner] (Ep. 2, 8)

  Guest Role
• 
  Shin Yeon Mi

  [Prisoner] (Ep. 2, 8)

  Guest Role
• 
  Lee Dong Chan

  Jung Tae Suk (Ep. 3)

  Guest Role
• 
  Jaspreet Kaur

  [Jazz] (Ep. 4)

  Guest Role
• 
  Kim Bong Hui

  [Elderly patient] (Ep. 4, 14)

  Guest Role
• 
  Lee Seon Hee

  Jeong Jin Hee [Reporter] (Ep. 5)

  Guest Role
• 
  Hwang Bo Jeong Il

  [Gambling den guard] (Ep. 5-6)

  Guest Role
• 
  Kim Hyuk Jong

  Han Joon Sang (Ep. 7)

  Guest Role
• 
  Jo Yun Hee

  Mok Ryeon (Ep. 8-9)

  Guest Role
• 
  Kim Min Che

  [Angry wife] (Ep. 8)

  Guest Role
• 
  Kim Seo Heon

  Han Yu Ri [Young] (Ep. 9)

  Guest Role
• 
  Won So Yoon

  Eun Soo Hyun [Teen] (Ep. 9)

  Guest Role
• 
  Jung Hye Kyung

  [Restaurant woman] (Ep. 9)

  Guest Role
• 
  Kim Geun Yeong

  [Jung Myeong Hee's friend] (Ep. 10)

  Guest Role
• 
  Park Sook Myung

  [Jung Myeong Hee's friend] (Ep. 10)

  Guest Role
• 
  Ha Joon Ho

  Kang Yun Seok [Lawyer] (Ep. 11)

  Guest Role
• 
  Lee Moo Nyoung

  [Neighbour] (Ep. 11)

  Guest Role
• 
  Park So Yoon

  [Neighbour] (Ep. 11)

  Guest Role
• 
  Jung Chung Gu

  [Police officer] (Ep. 11)

  Guest Role
• 
  Kim Hyun Jung

  [Hui Seon's mother] (Ep. 11)

  Guest Role
• 
  Kim Hak Seon

  Park Joo Sung (Ep. 13-14)

  Guest Role
• 
  Song Hoon

  [Doctor] (Ep. 13)

  Guest Role
• 
  Kwak Eun Young

  [Kim Joon's campaign staff] (Ep. 13)

  Guest Role
• 
  Hwang Sun Jung

  [Junseong foundation victim] (Ep. 13)

  Guest Role
• 
  Shin Hee Gook

  [Reporter] (Ep. 13-14)

  Guest Role
• 
  Kim Mi Ji

  [Reporter] (Ep. 13-14)

  Guest Role
• 
  Kim Hyun Chang

  [Detective] (Ep. 13-14)

  Guest Role
• 
  Choi E Jun

  Woo Ju (Ep. 14)

  Guest Role
• 
  Cha Geon Woo

  [Judge] (Ep. 14)

  Guest Role
• 
  Baek Ik Nam

  [Lawyer] (Ep. 14)

  Guest Role
• 
  Kim Yun Bae

  [Reporter] (Ep. 14)

  Guest Role
• 
  Kim Sun Ik

  [Reporter] (Ep. 14)

  Guest Role
• 
  Kim Tae Hoon

  [Supporter] (Ep. 14)

  Guest Role
• 
  Han Ji Eun

  [Volunteer] (Ep. 14)

  Guest Role
• 
  Kim Il Hyun

  [Prosectutor] (Ep. 14)

  Guest Role
• 
  Kim So Sook

  [Cleaning lady] (Ep. 14)

  Guest Role
• 
  Gok Sung Jin

  [Elevator soldier] (Ep. 14)

  Guest Role
• 
  Kim Han Sol

  Yoon Hee Jae [5 years old]

  Guest Role
• 
  Hwang Bo Mi

  [ABS anchorwoman]

  Guest Role
• 
  Lee Ji Ho

  Kwon Seon Yul [Young]

  Guest Role

Unknown

• 
  Yoo Jin Seok Unknown