Battle for Happiness

Director

• 
  Kim Yoon Cheol

Screenwriter

• 
  Joo Young Ha

Main Role

• 
  Lee El

  Jang Mi Ho

  Main Role
• 
  Jin Seo Yun

  Song Jung Ah

  Main Role
• 
  Cha Ye Ryun

  Kim Na Young

  Main Role
• 
  Park Hyo Ju

  Oh Yu Jin

  Main Role
• 
  Woo Jeong Won

  Hwang Ji Ye

  Main Role

Support Role

• 
  Son Woo Hyun

  Lee Jin Seop [Mi Ho's colleague]

  Support Role
• 
  No Ha Yeon

  Kang Ji Yool [Yu Ji & Do Joon's daughter]

  Support Role
• 
  Heo Yul

  Kang Ha Yool [Yu Ji & Do Joon's daughter]

  Support Role
• 
  Kim Seo A

  Yang So Won [Ji Ye's daughter]

  Support Role
• 
  Kim Young Hoon

  Lee Tae Ho [Na Young's husband]

  Support Role
• 
  Lee Je Yeon

  Jung Su Bin [Jung Ah's husband]

  Support Role
• 
  Lee Kyu Han

  Kang Do Jun [Yu Jin's husband]

  Support Role
• 
  Park Na Eun

  Baek Seung Hee [Eun Han's mother]

  Support Role
• 
  Seo Byuk Joon

  Song Jung Sik [Jung Ah's little brother]

  Support Role
• 
  Moon Hee Kyung

  Im Gang Suk [Mi Ho's mother]

  Support Role
• 
  Cha Hee

  Lee So Min [Chae Ah's mother]

  Support Role
• 
  Kim Ha Eon

  Jung Min Sung [Jung Ah & Su Bin's son]

  Support Role
• 
  Lee Sae Yoon

  Lee Eun Jin [Herinity Kindergarten Parent]

  Support Role
• 
  Park Jong Moo

  Seo Kyung Jun [Mi Ho's Team leader]

  Support Role
• 
  Hwang Yun Sung

  Do Jae Won [Mi Ho's colleague]

  Support Role
• 
  Ryu Seung Moo

  Gong Chang Hyun [Hung Ah's handyman]

  Support Role
• 
  Nam Myeong Ryeol

  Kang Bong Seok [Do Jun's father]

  Support Role
• 
  Kim Joong Don

  Bae Chang Hun [Detective]

  Support Role
• 
  Choi Ji Yeon

  [Herinity Kindergarten administrator]

  Support Role
• 
  Seo Yi Ra

  Joo A

  Support Role
• 
  Kim Hye Won

  Kim Ha Jin [Mi Ho's colleague]

  Support Role
• 
  Kim Hee Jae

  Jo Ah Ra [Herinity Kindergarten Teacher]

  Support Role
• 
  Yoo Hyeon Jong

  Han Joon Kyung [Jung Ah's secretary]

  Support Role

Guest Role

• 
  Bae Seul Gi

  Lim Da Eun

  Guest Role
• 
  Lee Ye Seo

  Oh Yoo Jin [Child]

  Guest Role
• 
  Gi Hwan

  [Security guard] (Ep. 1, 4)

  Guest Role
• 
  Kim Min Che

  [Oh Yoo Jin's maid] (Ep. 1, 3)

  Guest Role
• 
  Seo Sang Won

  [Police officer] (Ep. 3)

  Guest Role
• 
  Jung Hyun Woo

  [Police officer] (Ep. 3)

  Guest Role
• 
  Um Hyo Sup

  [Oh Yoo Jin's father] (Ep. 3)

  Guest Role
• 
  Yoo Yong

  [Aquarium employee] (Ep. 3)

  Guest Role
• 
  Kim Jae Il

  [Father] (Ep. 4)

  Guest Role
• 
  Kwak Ji Yoo

  [Mother] (Ep. 4)

  Guest Role
• 
  Yang Jin Seon

  [Kim Na Young's maid] (Ep. 5)

  Guest Role
• 
  Jung Ae Hwa

  [Hospital patient] (Ep. 6)

  Guest Role
• 
  Yang Shin Ji

  [Church member] (Ep. 6)

  Guest Role
• 
  Park Kyung Bok

  [High school teacher] (Ep. 6)

  Guest Role
• 
  Kim Hyeon Tae

  Kim Hyun Soo [DGB Financial Group staff] (Ep. 8)

  Guest Role
• 
  Choi Moon Kyung

  Choi Moon Kyoung [Doctor] (Ep. 8)

  Guest Role
• 
  Yoo Young Bok

  [DGB Financial Group Executive] (Ep. 8)

  Guest Role
• 
  Ha Nam Woo

  [DGB Financial Group HR executive] (Ep. 8)

  Guest Role
• 
  Jung Ja Young

  [DGB Financial Group employee] (Ep. 8)

  Guest Role
• 
  Lee Ha Joo

  [Dental clinic staff] (Ep. 9)

  Guest Role
• 
  Oh Ki Hwan

  [Bar manager] (Ep. 10)

  Guest Role
• 
  Jung Ki Sun

  [Deokwang Electronics owner] (Ep. 10)

  Guest Role
• 
  Lee Jae Eun

  [Caregiver] (Ep. 11)

  Guest Role
• 
  Uhm Tae Ok

  [Locksmith] (Ep. 11)

  Guest Role
• 
  Kim Deok Ju

  [Hair salon owner] (Ep. 11)

  Guest Role
• 
  Lee Sang Sook

  Sim Hye Jung [Yu Jin's mother]

  Guest Role
• 
  Ji Min

  Yoon Chae Ah [So Min & SungJae's daughter]

  Guest Role
• 
  Ha Sun Ho

  Oh Yoo Jin [Young]

  Guest Role
• 
  Choi Gyu Ri

  Jang Mi Ho [Young]

  Guest Role
• 
  Song A Kyung

  [Mi Ho's colleague]

  Guest Role
• 
  Kim Tae Young

  [Herinity Kindergarten teacher]

  Guest Role
• 
  Kim Do Hyeong

  [Attorney] (Ep.12)

  Guest Role
• 
  Jung Tae In

  [DGB Financial Group Staff] (Ep.13)

  Guest Role
• 
  Yoon Seo Yeon

  Jang Mi Ho [Child]

  Guest Role
• 
  Shin Hee Gook

  [Police officer] (Ep.15)

  Guest Role
• 
  Son Dong Soo

  [Apartment resident] (Ep.16)

  Guest Role
• 
  No Kyung

  Yoon Sung Jae [So Min's husband]

  Guest Role
• 
  Hwa Sung

  [Church member] (Ep. 6)

  Guest Role
• 
  Shin In Ah

  [Herinity Kindergarten Mother]

  Guest Role
• 
  Lee Suk Ho

  [Computer repair technican] (Ep.7)

  Guest Role
• 
  Song Ha Na

  [Model #4]

  Guest Role
• 
  Jaspreet Kaur

  [English teacher] (Ep. 1)

  Guest Role
• 
  Kwon Si Wan

  Kim Eun Han

  Guest Role
• 
  Lee Dae Kyum

  Jun Ha

  Guest Role
• 
  Han Seo Hee

  Lee A Rin

  Guest Role
• 
  Choi Soo Min

  Park Chae Ri

  Guest Role
• 
  Cha Yu Jin

  [Do Jun's attending nurse]

  Guest Role

Unknown

• 
  Sung Ye Rok Unknown
• 
  Park Ye Bom Unknown