Kairos

Director

• 
  Park Seung Woo
• 
  Sung Chi Wook

Screenwriter

• 
  Lee Su Hyeon

Main Role

• 
  Shin Sung Rok

  Kim Seo Jin

  Main Role
• 
  Lee Se Young

  Han Ae Ri

  Main Role
• 
  Ahn Bo Hyun

  Seo Do Gyun

  Main Role
• 
  Nam Gyu Ri

  Kang Hyun Chae

  Main Role

Support Role

• 
  Kang Seung Yoon

  Im Geon Wook [Ae Ri's friend]

  Support Role
• 
  Jo Dong In

  Lee Taek Kyu [Seo Jin's driver]

  Support Role
• 
  Hwang Jung Min

  Kwak Song Ja [Ae Ri's mother]

  Support Role
• 
  Shin Goo

  Yoo Seo Il [Yoojong Construction]

  Support Role
• 
  Lee Joo Myung

  Park Soo Jung

  Support Role
• 
  Im Chul Hyung

  Park Ho Young [Detective]

  Support Role
• 
  Shim Hye Yun

  Kim Da Bin [Seo Jin's daughter]

  Support Role
• 
  So Hee Jung

  Jung Hye Kyung [Babysitter]

  Support Role
• 
  Jeon Kwang Jin

  Choi Deok Ho [Detective]

  Support Role
• 
  Jung Sung Joon

  Lee Tae Woo [Detective]

  Support Role
• 
  Lee Tae Goo

  Kang Byung Suk [Detective]

  Support Role
• 
  Ko Kyu Pil

  Kim Jin Ho

  Support Role
• 
  Kwon Hyuk

  Han Tae Gil

  Support Role

Guest Role

• 
  Lee Yoon Sang

  [Executive] (Ep. 1-2)

  Guest Role
• 
  Seo Myung Chan

  [Executive] (Ep. 1-2)

  Guest Role
• 
  Jo Nam Hee

  [Yujung Construction executive] (Ep. 1-2)

  Guest Role
• 
  Ham Gun Soo

  [Drunk man] (Ep. 1)

  Guest Role
• 
  Lee Jong Goo

  Minister Park (Ep. 1)

  Guest Role
• 
  Won Chun Gyu

  [Doctor] (Ep. 1)

  Guest Role
• 
  Park Eun Young

  [Convenience store owner] (Ep. 1, 3)

  Guest Role
• 
  Bae Eun Woo

  [Nurse] (Ep. 1)

  Guest Role
• 
  Uhm Ja Yoon

  [Detective] (Ep. 2)

  Guest Role
• 
  Choi Soo Hyun

  [Receptionist] (Ep. 2-3)

  Guest Role
• 
  Seo Hee

  [Nurse] (Ep. 2-3)

  Guest Role
• 
  Mi So Yun

  [Nurse] (Ep. 2-3, 16)

  Guest Role
• 
  Kwak Na Yeon

  [Homeowner] (Ep. 2)

  Guest Role
• 
  Lee Si Eon

  [Motorcycle deliveryman] (Ep. 2)

  Guest Role
• 
  Yang Chang Wan

  [Ae Ri's homeroom teacher] (Ep. 2)

  Guest Role
• 
  Seo Hye Jin

  [Kim Seo Jin's secretary] (Ep. 3)

  Guest Role
• 
  Eom Ji Man

  [Detective] (Ep. 3)

  Guest Role
• 
  Bae Bo Ram

  [Health service employee] (Ep. 3)

  Guest Role
• 
  Cha Sang Mi

  [Sky Kids Cafe employee] (Ep. 3)

  Guest Role
• 
  Park Kang Sub

  [Computer repair shop guy] (Ep. 3)

  Guest Role
• 
  Lee Dong Gyu

  NBC Reporter Lee Dong Gyu (Ep. 3)

  Guest Role
• 
  Heo Seon Haeng

  [Real estate agent] (Ep. 3)

  Guest Role
• 
  Hong Boo Hyang

  [Real estate agent] (Ep. 3)

  Guest Role
• 
  Jung Dong Geun

  [Prosecutor] (Ep. 4-5, 16)

  Guest Role
• 
  Choi Deok Moon

  Kim Yoo Seok (Ep. 5)

  Guest Role
• 
  Lee Jung Joon

  Kim Seo Jin [Young] (Ep. 5)

  Guest Role
• 
  Jung Ah Young

  Kim Ji Ah (Ep. 5)

  Guest Role
• 
  Jang Eui Don

  [Taeheung Planning boss] (Ep. 5)

  Guest Role
• 
  Gu Bon Jin

  [Apartment Security Guard] (Ep. 5)

  Guest Role
• 
  Kim Yeon Seo

  Kang Hyun Chae [Child] (Ep. 6)

  Guest Role
• 
  Sung Ji Ru

  [Kang Hyeon Chae's father] (Ep. 6-8)

  Guest Role
• 
  Kim Jong Ho

  Kim Joon Sub (Ep. 6)

  Guest Role
• 
  Park Gi Seon

  Kim Han Cheol (Ep. 6)

  Guest Role
• 
  Ban Hye Young

  [Bank teller] (Ep. 6)

  Guest Role
• 
  Kim Sung Yong

  [Jung Hee Diner owner] (Ep. 6)

  Guest Role
• 
  Lee A Ra

  Han Ae Ri [Child]

  Guest Role
• 
  Park Seo Kyung

  Han Ae Ri [13-year-old]

  Guest Role
• 
  Yu Yeon Seok

  [Prison guard]

  Guest Role
• 
  Kim Ji Su

  [Daycare instructor] (Ep. 2, 7)

  Guest Role
• 
  Park Ji Ho

  [Hospital security staff] (Ep. 11)

  Guest Role
• 
  Park Do Wook

  [Storage company staff] (Ep. 15-16)

  Guest Role
• 
  Min Eung Shik

  [Judge] (Ep.16)

  Guest Role
• 
  Lee Su Hyung

  [Deliveryman] (Ep.11-12)

  Guest Role
• 
  Shin Seo Woo

  (Ep. 1)

  Guest Role
• 
  Kang Gu Ha

  [Detective] (Ep.12)

  Guest Role
• 
  Kwon Ban Suk

  [HBN reporter] (Ep. 16)

  Guest Role
• 
  Lee Gyu Sub

  [Man in debt] (Ep.11)

  Guest Role
• 
  Jung Ji Hwan

  [Detective] (Ep. 3-4)

  Guest Role
• 
  Baek Kil Sung

  [Department head]

  Guest Role
• 
  Kim Kyu Na

  (Ep. 5)

  Guest Role
• 
  Han Sa Myung

  [Motel clerk] (Ep. 6)

  Guest Role
• 
  Heo Na Kyung

  [Golfer] (Ep. 8)

  Guest Role
• 
  Cho Yun U

  [Kindergartener] (Ep. 4)

  Guest Role
• 
  Son Dong Hwa

  [Yujung Construction employee]

  Guest Role
• 
  Kim Hee Su

  [Firefighter]

  Guest Role
• 
  Park Seung Chan

  [Employee] (Ep.4)

  Guest Role
• 
  Park Jong Bo

  [Construction site worker] (Ep. 1)

  Guest Role

Unknown

• 
  Park So Jung Unknown