Bad-Memory Eraser

Director

• 
  Yoon Ji Hoon
• 
  Kim Na Young

Screenwriter

• 
  Jung Eun Yeong

Main Role

• 
  Kim Jae Joong

  Lee Gun

  Main Role
• 
  Jin Se Yeon

  Kyung Ju Yeon

  Main Role
• 
  Lee Jong Won

  Lee Sin

  Main Role
• 
  Yang Hye Ji

  Jeon Sae Yan

  Main Role

Support Role

• 
  Lee Ruby

  Si On [Tennis player]

  Support Role
• 
  Lee Joon Hyuk

  Lee Seok Du [Lee Gun & Lee Sin's father]

  Support Role
• 
  Yoon Yoo Sun

  Eun Ji Seon [Lee Gun & Lee Sin's mother]

  Support Role
• 
  Jang Eui Soo

  Nam Jin [Doctor]

  Support Role
• 
  Kim Kwang Gyu

  Han Dong Chil [Psychiatrist]

  Support Role
• 
  Lee Dal

  Bang Guk Bong [Lee Gun's best friend]

  Support Role
• 
  Bae Hae Seon

  Jo Yeon Sil [Ju Yeon's mother]

  Support Role
• 
  Kim Jae Yong

  Yun Tae O [Doctor]

  Support Role
• 
  Han Sang Jin

  Hong Jun Man [CEO of Big Picture Sports Agency]

  Support Role
• 
  Shin Eun Jung

  Song Mi Seon [Nurse]

  Support Role
• 
  Ko Dong Ha

  Jeong Seung Hyeon [Ju Yeon's nephew]

  Support Role
• 
  Jang Yu Bin

  Yeo Min Jeong [Doctor]

  Support Role

Guest Role

• 
  Choi Seung Hoon

  Lee Gun [Young] (Ep. 1, 15-16)

  Guest Role
• 
  Park Seo Kyung

  Kyung Ju Yeon [Young] (Ep. 1, 15-16)

  Guest Role
• 
  Jo Yi Hyun

  Lee Sin [Young] (Ep. 1)

  Guest Role
• 
  Hong Seo Joon

  [Hospital director] (Ep. 1-5, 14, 16)

  Guest Role
• 
  Ok Il Jae

  [Reporter] (Ep. 1)

  Guest Role
• 
  Park Jin U

  [Airport boy] (Ep. 1)

  Guest Role
• 
  Park Hye Jin

  [Grandmother] (Ep. 1)

  Guest Role
• 
  Seo Hye Jin

  [Flight attendant] (Ep. 1)

  Guest Role
• 
  Yang Dong Geun

  [Tennis announcer] (Ep. 1)

  Guest Role
• 
  Jung Dong Gyu

  [Minister] (Ep. 1-2, 4, 6, 16)

  Guest Role
• 
  Jung Eun Pyo

  [Ju Yeon’s patient] (Ep. 1-4, 7, 12, 16)

  Guest Role
• 
  Han Yu Hee

  [Nurse] (Ep. 2)

  Guest Role
• 
  Lee Kyu Ri

  [Lee Shin’s fan] (Ep. 2)

  Guest Role
• 
  Kang Gu Ha

  [Paramedic] (Ep.1)

  Guest Role
• 
  Ko Kyung Man

  [Community center staff] (Ep. 3)

  Guest Role
• 
  Oh Ki Hwan

  [Detective] (Ep. 3, 8, 12-13, 16)

  Guest Role
• 
  Kim Jin Ok

  [Neighborhood woman] (Ep. 3, 15)

  Guest Role
• 
  Jung Woon

  [Investor’s bodyguard] (Ep. 5)

  Guest Role
• 
  Son Yeong Soon

  [Recycler granny] (Ep. 4)

  Guest Role
• 
  Kang Joon Gyu

  [Sports car driver] (Ep. 4)

  Guest Role
• 
  Jang Jae Kwon

  [Tennis announcer] (Ep. 4)

  Guest Role
• 
  Jeong Young Do

  [Tennis announcer] (Ep. 4)

  Guest Role
• 
  Park Jin Young

  [Nurse] (Ep. 5)

  Guest Role
• 
  Kim Ho

  [Doctor] (Ep. 5)

  Guest Role
• 
  Yoon Hee Won

  [Investor] (Ep. 5-6, 8-9, 16)

  Guest Role
• 
  Yoon Seol Ah

  [Si On’s mom] (Ep. 6-7, 10, 15)

  Guest Role
• 
  Song Chang Gyu

  [Security guard] (Ep. 6, 8)

  Guest Role
• 
  Uhm Tae Ok

  [Village head] (Ep. 7)

  Guest Role
• 
  Park Seung Tae

  [Village resident] (Ep. 7)

  Guest Role
• 
  Jo Nam Hee

  [KTA executive] (Ep. 7, 13)

  Guest Role
• 
  Park Ji Ho

  Officer Kim (Ep. 8)

  Guest Role
• 
  Seo Chae Mi

  [Florist] (Ep. 8)

  Guest Role
• 
  Seo Jung Bin

  [Bar customer] (Ep. 8)

  Guest Role
• 
  Yoo Pil Ran

  [Athlete’s mom] (Ep. 8)

  Guest Role
• 
  Jung Mi Kyung

  [Athlete’s mom] (Ep. 8)

  Guest Role
• 
  Song Hoon

  [Commercial film director] (Ep. 9)

  Guest Role
• 
  Im Ho

  Kyung Sang Hyun [Ju Yeon's father] (Ep. 9, 16)

  Guest Role
• 
  Nam Sang Ran

  [Pet hotel staff] (Ep. 10)

  Guest Role
• 
  Choi Nam Uk

  [Pharmacist] (Ep. 10)

  Guest Role
• 
  Choi Joon Hyuk

  [Paramedic] (Ep. 10)

  Guest Role
• 
  Jun Joon Woo

  [Reporter] (Ep. 11)

  Guest Role
• 
  Park Hyun Sook

  Jeon So Jeong [Sae Yan's mother] (Ep. 11-16)

  Guest Role
• 
  Kim Young Hoon

  [Lee Sin's fan] (Ep. 12)

  Guest Role
• 
  Kim Dae Geun

  [Enforcer] (Ep. 12)

  Guest Role
• 
  Yoo Sung Min

  [Teen boy] (Ep. 13)

  Guest Role
• 
  Kim Sung Yong

  [KTA executive] (Ep. 13)

  Guest Role
• 
  Lee Bum Chan

  [KTA executive] (Ep. 13)

  Guest Role
• 
  Min Eung Shik

  Dr. Kim (Ep. 14)

  Guest Role
• 
  Lee Yoon Sang

  [Hired to act as Sae Yan's biological father] (Ep. 14)

  Guest Role
• 
  Shin Da Seul

  [Waitress] (Ep. 14)

  Guest Role
• 
  Lee Dong Gyu

  [Detective] (Ep. 14)

  Guest Role
• 
  Ahn Nae Sang

  An Hyo Myeong [Sae Yan's biological father] (Ep. 14-16

  Guest Role
• 
  Kim Seung Jun

  [Deliveryman] (Ep. 15)

  Guest Role
• 
  Hwang Do Yoon

  Jeon Sae Yan [Young] (Ep. 16)

  Guest Role
• 
  Seo Kwang Jae

  Yun Dong Guk [Ethics Committee] (Ep. 16)

  Guest Role
• 
  Yoo Young Bok

  You Dong Guk [Ethics Committee] (Ep. 16)

  Guest Role
• 
  Lee Jae Eun

  [Market seller] (Ep. 16)

  Guest Role
• 
  Seon Yul U

  [Detective] (Ep. 16)

  Guest Role
• 
  Lee Hyeon Ha

  [Teen boy] (Ep.13)

  Guest Role