Perfect Crown

Director

• 
  Park Joon Hwa
• 
  Bae Hui Yeong

Producer

• 
  Kang Dae Sun

Screenwriter

• 
  Yoo Ji Won

Main Role

• 
  IU

  Seong Hui Ju

  Main Role
• 
  Byeon Woo Seok

  Grand Prince Yi An

  Main Role
• 
  Steve Noh

  Min Jeong U

  Main Role
• 
  Gong Seung Yeon

  Yun I Rang

  Main Role

Support Role

• 
  Yoo Soo Bin

  Choi Hyeon

  Support Role
• 
  Lee Yeon

  Do Hye Jeong

  Support Role
• 
  Lee Jae Won

  Seong Tae Ju

  Support Role
• 
  Chae Seo An

  Han Da Yeong

  Support Role
• 
  Jo Seung Yun

  Seong Hyeon Guk

  Support Role
• 
  Park Joon Myun

  Choi Jin Suk [Court lady]

  Support Role
• 
  Choi Ji Su

  Lee A Reum [Yi An's private residence's staff]

  Support Role
• 
  Lee Si Hoon

  Kim Yeong Mun [Yi An's butler]

  Support Role
• 
  Jung Ji Ahn

  Kim Yeong Seon [Yeong Mun's sister | Yi An's private residence's staff]

  Support Role
• 
  Jin Se Rim

  Yoo Ji Su [Yi An's private residence's staff]

  Support Role
• 
  Park Ji Ye

  Park Seung Hui [Castle Beauty secretary's office staff]

  Support Role
• 
  Jo Jae Yun

  Yun Seong Won

  Support Role
• 
  Kim Jung Woon

  Cho Min Yeong [Prime minister's chief of staff]

  Support Role
• 
  Kim Eun Ho

  Yi Yun

  Support Role
• 
  Lee Chae Kyung

  Yim Seon Hwa [Court lady]

  Support Role
• 
  Kim Gyu Ri

  [Jeong U’s secretary]

  Support Role
• 
  Kim Soo Jin

  Jung Mi Hui [Court lady]

  Support Role

Guest Role

• 
  Seong Seung Ha

  [Student] (Ep. 1)

  Guest Role
• 
  Bae Seong Il

  [Teacher] (Ep. 1)

  Guest Role
• 
  Kim Ha Jin

  [Court lady] (Ep. 1)

  Guest Role
• 
  Park Ah In

  [Banquet guest] (Ep. 1)

  Guest Role
• 
  Kim Bo Mi

  [Banquet guest] (Ep. 1)

  Guest Role
• 
  Kim Dae Gon

  [Castle Beauty logistics manager] (Ep. 1)

  Guest Role
• 
  DEMIAN

  Ryu Min Seok [Student] (Ep. 1-2)

  Guest Role
• 
  Son Jun Ho

  King Hui Jong [Yi An’s father] (Ep. 1-2, 4, 8)

  Guest Role
• 
  Sung Jun

  Yi Hwan [Yi An's older brother] (Ep. 1-4, 6, 10)

  Guest Role
• 
  Lee Byung Joon

  Kim Do Yeong [Royal school’s principal] (Ep. 1-2)

  Guest Role
• 
  Yoon Byung Hee

  [Castle Beauty PR manager] (Ep. 1-2, 5)

  Guest Role
• 
  Im Chul Soo

  [Castle Beauty sales manager] (Ep. 1-2)

  Guest Role
• 
  Lee Su Ho

  Grand Prince Yi An [Child] (Ep. 1, 4-5, 8)

  Guest Role
• 
  Kim Dae Ho

  [Reporter] (Ep. 1, 5)

  Guest Role
• 
  Yeom Ji Hye

  [Anchorwoman] (Ep. 1, 4)

  Guest Role
• 
  Son Sung Chan

  [Government official] (Ep. 1, 4, 12)

  Guest Role
• 
  Heo Nam Jun

  Kim Yeon Jun [Hui Ju's blind date] (Ep. 2)

  Guest Role
• 
  Kim Yool Ho

  [Yi Yun’s secretary] (Ep. 2)

  Guest Role
• 
  Lee Dong Gyu

  [Economic Honors MC] (Ep. 2)

  Guest Role
• 
  Jang Hee Ryung

  Kim Jae Gyeong [Yi An's sister-in-law] (Ep. 2, 4, 6)

  Guest Role
• 
  Park Jae Wan

  [Doctor] (Ep. 2, 8)

  Guest Role
• 
  Kim Geon U

  Seong Tae Ju [Child] (Ep. 3)

  Guest Role
• 
  Kim Jae Chul

  Director Jung [Royal protection bureau] (Ep. 3)

  Guest Role
• 
  Jo Young Mi

  [Teacher] (Ep. 3)

  Guest Role
• 
  Park Hyun Jung

  [Tae Ju’s mom] (Ep. 3)

  Guest Role
• 
  Lee Seung Hee

  [Hyeon Guk's butler] (Ep. 3)

  Guest Role
• 
  Kim Yu Bin

  [Royal scholarship student] (Ep. 3)

  Guest Role
• 
  Lee Seung Jun

  [Priest] (Ep. 3, 7)

  Guest Role
• 
  Jang Eui Don

  Kim Gi Yeol (Ep. 4)

  Guest Role
• 
  Jung Hee Tae

  Professor Hwang U Gyeong [Formal royal spokesman] (Ep. 4)

  Guest Role
• 
  Park Bo Bae

  [Jae Gyeong's friend] (Ep. 4)

  Guest Role
• 
  Seo Eun Young

  [Jae Gyeong's friend] (Ep. 4)

  Guest Role
• 
  Jung Yong Geom

  [Baseball match announcer] (Ep. 4)

  Guest Role
• 
  Kim So Hyun

  Queen Ui Hyeon [Yi An and Yi Hwan's mother] (Ep. 5)

  Guest Role
• 
  Park Yong

  [Doctor] (Ep. 5)

  Guest Role
• 
  Bae Eun Woo

  [Banquet guest] (Ep. 5-6)

  Guest Role
• 
  Lee Do Hye

  [Interviewer] (Ep. 6)

  Guest Role
• 
  Go Dong Eob

  [Wedding officiant] (Ep. 7)

  Guest Role
• 
  Kim Su Kyung

  [J Estina saleswoman] (Ep. 7)

  Guest Role
• 
  Byeon Chang Yeol

  [Physician] (Ep. 7-8)

  Guest Role
• 
  Lee Doo Suk

  [Doctor] (Ep. 8)

  Guest Role
• 
  Yun Ki Chang

  [Police agency officer] (Ep. 8)

  Guest Role
• 
  Ha Min

  [Court lady past] (Ep. 9)

  Guest Role
• 
  Kim Ho

  [Official] (Ep. 10)

  Guest Role
• 
  Park Ji Ho

  [Reporter] (Ep. 10)

  Guest Role
• 
  Yang Ha Yoon

  [Reporter] (Ep. 10)

  Guest Role
• 
  Joo In Ae

  [Reporter] (Ep. 10)

  Guest Role
• 
  Kim Young Jae

  Do Seung Ji [Royal secretary] (Ep. 10-11)

  Guest Role
• 
  Jeon Se Yong

  [Government official] (Ep. 10, 12)

  Guest Role
• 
  Song Jin Hee

  [Diner] (Ep. 11)

  Guest Role
• 
  Lee Si Young

  [Diner] (Ep. 11)

  Guest Role
• 
  Kim Byung Chul

  [Government official] (Ep. 11)

  Guest Role
• 
  Choi Min

  [Government official] (Ep. 11)

  Guest Role
• 
  Seo Sang Won

  [Government official] (Ep. 11-12)

  Guest Role
• 
  Han Jae Hun

  Secretary Yun

  Guest Role
• 
  Hong Seo Joon

  General manager Jung

  Guest Role