The Art of Negotiation

Director

• 
  Ahn Pan Seok

Main Role

• 
  Lee Je Hoon

  Yun Ju No

  Main Role
• 
  Kim Dae Myung

  O Sun Yeong

  Main Role
• 
  Sung Dong Il

  Song Jae Sik

  Main Role
• 
  Jang Hyun Sung

  Ha Tae Su

  Main Role
• 
  Oh Man Seok

  Lee Dong Ju

  Main Role
• 
  Ahn Hyun Ho

  Kwak Min Jeong

  Main Role
• 
  Cha Kang Yoon

  Choi Jin Su

  Main Role

Support Role

• 
  Park Hyung Soo

  Kang Sang Bae [Yoomin Investment director]

  Support Role
• 
  Lee Chae Won

  Ji Yeon U [Bium D & I CEO]

  Support Role
• 
  Lee Kyu Sung

  Im Hyeong Seop

  Support Role
• 
  Kim Jong Tae

  Cho Beom Su [Sanin Group executive]

  Support Role
• 
  Jang Ho Il

  Choi Dong Gyu [Sanin Group executive]

  Support Role
• 
  Choi Bum Ho

  Park Tae Ho [Sanin Group executive]

  Support Role
• 
  Jung Suk Yong

  O Chi Yeong [Sanin Group executive]

  Support Role
• 
  Sung Yeo Jin

  Min Hye Seong [Sanin Group executive]

  Support Role
• 
  Kim Hak Seon

  Kim U Cheol [Sanin Group executive]

  Support Role
• 
  Yang Jo Ah

  Ji Eun

  Support Role
• 
  Jang In Sub

  Cha Ho Jin [Cha Cha Games CEO]

  Support Role
• 
  Lee Si Hoon

  Do Han Cheol [DC Games CEO]

  Support Role
• 
  Lee Hannury

  Jennie [Game & Entertainment analyst]

  Support Role
• 
  Han Do Yi

  Sin Ji Su [Jae Sik's secretary]

  Support Role

Guest Role

• 
  Song Jae Ha

  Kim Jae Ha (Ep. 1)

  Guest Role
• 
  Yook Hyun Suk

  Yuk Hyeon Suk (Ep. 1)

  Guest Role
• 
  Lee Yoon Hee

  [Realtor] (Ep. 1)

  Guest Role
• 
  Park Jin Yeong

  [Market vendor] (Ep. 1)

  Guest Role
• 
  So Yun Ho

  [Apartment buyer] (Ep. 1)

  Guest Role
• 
  Kim Cho Rok

  [Apartment buyer] (Ep. 1)

  Guest Role
• 
  Kim Soo Yeon

  [Apartment sales staff] (Ep. 1)

  Guest Role
• 
  Jang Yong Chul

  [Taxi driver] (Ep. 1, 3)

  Guest Role
• 
  Yoon Je Moon

  Lee Hun Min [Sanin Construction CEO] (Ep. 2)

  Guest Role
• 
  Kim Song Il

  Lee Jeong Eum [Sanin Construction vice-president] (Ep. 2)

  Guest Role
• 
  Kim Da Hwin

  Ju Yong (Ep. 2)

  Guest Role
• 
  Jin Ga Eun

  [Tae Su's daughter] (Ep. 2)

  Guest Role
• 
  Choi Eun Yool

  [Tae Su's daughter] (Ep. 2)

  Guest Role
• 
  Jo Min Wook

  [Bium CFO] (Ep. 2)

  Guest Role
• 
  Kim Young Ok

  {Apartment resident] (Ep. 2)

  Guest Role
• 
  Kim Chang Hwan

  [Sanin Construction employee] (Ep. 2)

  Guest Role
• 
  Kim Kye Hyung

  [Sanin Construction employee] (Ep. 2)

  Guest Role
• 
  Cha Se Yeon

  [Sanin Construction employee] (Ep. 2)

  Guest Role
• 
  Park Sang Jong

  Dr. Park (Ep. 2, 8)

  Guest Role
• 
  Kim Ji Min

  Park Eun Chae (Ep. 2, 8)

  Guest Role
• 
  Park In Young

  [Appliance saleswoman] (Ep. 3)

  Guest Role
• 
  Myung Seok Geun

  [Cha Cha Games employee] (Ep. 3-4)

  Guest Role
• 
  Kim Seoung Woo

  [Cha Cha Games employee] (Ep. 3-4)

  Guest Role
• 
  Lee Suk Hyeong

  [Cha Cha Games employee] (Ep. 3-4)

  Guest Role
• 
  Jung Eui Soon

  [Restaurant owner] (Ep. 4, 7)

  Guest Role
• 
  Hong In

  Yun Ju Seok (Ep. 6)

  Guest Role
• 
  Yang Jae Sung

  [Go player] (Ep. 6)

  Guest Role
• 
  Park Jong Hwan

  [Prosecutor] (Ep. 7)

  Guest Role
• 
  Kim Yong Jun

  [Dolphin Hotel CEO] (Ep. 8)

  Guest Role
• 
  Kim Gyu Do

  [Employee] (Ep. 9)

  Guest Role
• 
  Im Ji Hyun

  Jeong Hwa (Ep. 9-10)

  Guest Role
• 
  Oh Ryoong

  Choi Seong Il (Ep. 9-10)

  Guest Role
• 
  Jang So Yeon

  Jung Bon Ju (Ep. 9-10)

  Guest Role
• 
  Song Ok Sook

  [Sun Yeong's mother] (Ep. 9-10)

  Guest Role
• 
  Park Sang Hyun

  [Caddie] (Ep. 9-10)

  Guest Role
• 
  Lee Rang Seo

  [Employee] (Ep. 9-10)

  Guest Role
• 
  Park Yong

  Choi Yong Seok (Ep. 10)

  Guest Role
• 
  Kim Sang Bo

  Han Gil Su (Ep. 10)

  Guest Role
• 
  Park Hyuk Kwon

  Ko Byeong Su [CEO] (Ep. 11-12)

  Guest Role
• 
  Kim In Kwon

  [Committee member] (Ep. 11-12)

  Guest Role
• 
  Yeon Bo Ra

  [Funeral attendee] (Ep. 12)

  Guest Role
• 
  Im Jin Hyo

  Theo [Director of Samuel Fund]

  Guest Role
• 
  Heo Jung Do

  Mr. David

  Guest Role
• 
  Jeon Seok Chan

  [Jae Sik's secretary]

  Guest Role
• 
  Kil Hae Yeon

  [Min Jeong's mother]

  Guest Role

Cameo

• 
  Lee Sung Jae

  Jang Won Seok (Ep. 2, 9-12)

  Cameo
• 
  Kim Chang Wan

  Park Rae Gyeong (Ep. 5)

  Cameo
• 
  Miyauchi Hitomi

  Hirose Haruka [Shimizu employee] (Ep. 5-6)

  Cameo
• 
  Aoki Munetaka

  Naito Senichi [Shimizu factory head] (Ep. 5-6)

  Cameo
• 
  Kwon Yu Ri

  Song Ji O [CEO of DADO Resort] (Ep. 7-8)

  Cameo
• 
  Son Jong Hak

  Lee Hyeong Taek (Ep. 9-10)

  Cameo