Birthday

Art Director

• 
  Lee Mok Won

Composer

• 
  Lee Jae Jin

Editor

• 
  Shin Min Kyung

Executive Producer

• 
  Lee Dong Ha

Producer

• 
  Lee Chang Dong

Production Sound Mixer

• 
  Lee Seung Chul

Screenwriter & Director

• 
  Lee Jong Eon

Main Role

• 
  Sul Kyung Gu

  Jung Il

  Main Role
• 
  Jeon Do Yeon

  Soon Nam

  Main Role

Support Role

• 
  Do Yeong Seo

  Ye Sol

  Support Role
• 
  Yoon Chan Young

  Su Ho

  Support Role
• 
  Lee Bong Ryun

  Jung Sook

  Support Role
• 
  Park Jong Hwan

  Young Joon

  Support Role
• 
  Kwon So Hyun

  Eun Bin

  Support Role
• 
  Sung Yoo Bin

  Sung Joon

  Support Role
• 
  Tang Jun Sang

  Woo Chan

  Support Role
• 
  Kim Soo Jin

  [Woo Chan's mother]

  Support Role
• 
  Kim Gye Seon

  [Hyung Woo's mother]

  Support Role
• 
  Sun Wook Hyun

  [Hyung Woo's father]

  Support Role
• 
  Kim Hyun

  [Gun Jae's mother]

  Support Role
• 
  Shin Moon Sung

  [Gun Jae's father]

  Support Role
• 
  Shin Mi Young

  [Chang Hun's mother]

  Support Role
• 
  Park Yun Ho

  [Chang Hoon's father]

  Support Role
• 
  So Hee Jung

  [Seok Won's mother]

  Support Role
• 
  Shin An Jin

  [Seok Won's father]

  Support Role

Guest Role

• 
  Jung Jong Joon

  [Uncle from father's side]

  Guest Role
• 
  Kim Min Jae

  [Immigration officer]

  Guest Role

Bit part

• 
  Choi Eun Hoo

  Min Hyuk

  Bit part
• 
  Ham Hee Soo

  Min Jae

  Bit part
• 
  Son Bo Seung

  Jae Hyun

  Bit part
• 
  Kim Jong Tae

  [Taxi driver]

  Bit part
• 
  Shin Dong Ryuk

  [Younger sister's husband]

  Bit part
• 
  Kim Jin Ok

  [Bereaved family mother]

  Bit part
• 
  Yoo Ji Hyun

  [Supermarket kid's mother]

  Bit part
• 
  Ahn Da Jung

  [Field assistant teacher]

  Bit part
• 
  Park Kyung Geun

  [Immigration staff member]

  Bit part
• 
  Seo Suk Gyu

  [Immigration staff]

  Bit part
• 
  Kim Soo Yun

  [Little sister]

  Bit part
• 
  Park Min Gyu

  [School janitor]

  Bit part
• 
  Jo Shi Nae

  [Bo Im's mother]

  Bit part
• 
  Park Mi Hyun

  [Supermarket cash register employee]

  Bit part
• 
  Kim Wang Do

  [Immigration service officer #4]

  Bit part
• 
  Yang Hee Jae

  [Kindergarten boy]

  Bit part
• 
  Yoon Jae Hyun

  [Fast food manager]

  Bit part
• 
  Yeon Seung Bin

  [Birthday party boy #4]

  Bit part
• 
  Kim Jong Hoon

  [Site assistant teacher]

  Bit part
• 
  Kim Do Young

  [Sinking of MV Sewol truth department #1]

  Bit part
• 
  Kim Soo Yeon

  [Girl]

  Bit part
• 
  Kwon Ip Sae

  [Girl]

  Bit part
• 
  Park Ga Young

  [Mart products staff]

  Bit part
• 
  Kim Hyun Jung

  [Environmental school teacher]

  Bit part
• 
  Seo Jae Woo

  [Birthday party boy #2]

  Bit part
• 
  Jung Hyun Seok

  [Interviewer #2]

  Bit part
• 
  Kim Hyung Joo

  [Woo Chan's older sister]

  Bit part
• 
  Hong Sung Duk

  [Woo Chan's father]

  Bit part
• 
  Kim Chu Wol

  [Aunt from father's side]

  Bit part
• 
  Kang Chan Yang

  [Mart counter employee]

  Bit part
• 
  Ok Joo Ri

  [Bereaved mother]

  Bit part
• 
  Lee Sang Hong

  [Sinking of MV Sewol truth department #3]

  Bit part
• 
  Kwak Min Gyoo

  [Cousin]

  Bit part