On Air

Assistant Director

• 
  Choi Ji Yeong

Director

• 
  Shin Woo Cheol

Screenwriter

• 
  Kim Eun Sook

Main Role

• 
  Song Yoon Ah

  Seo Young Eun

  Main Role
• 
  Kim Ha Neul

  Oh Seung Ah

  Main Role
• 
  Lee Bum Soo

  Jang Ki Joon

  Main Role
• 
  Park Yong Ha

  Lee Kyung Min

  Main Role

Support Role

• 
  Kim Sung Oh

  Kim Sung Oh [SW manager]

  Support Role
• 
  Yoo Seo Jin

  Yoon Hyun Soo

  Support Role
• 
  Lee Chul Min

  Kim Hak Seon

  Support Role
• 
  Ricky Kim

  Aidan Lee [Seung Ah's friend]

  Support Role
• 
  Lee Sung Min

  Song Soo Chul [SBC drama director]

  Support Role
• 
  Yeo Ho Min

  Hong Sung Hwa

  Support Role
• 
  Shin Dong Woo

  Kim Joon Hee

  Support Role
• 
  Yoo Hae Jung Support Role
• 
  Choi Sang Hoon

  Kang Ho Sang

  Support Role
• 
  Sul Ji Yoon

  Writer Kwon

  Support Role
• 
  Hong Ji Min

  Ms. Lee [Seo Young Eun's unni]

  Support Role
• 
  Kim Ki Soo

  Young-eun's tango teacher

  Support Role
• 
  Kang Samuel

  Armed airline

  Support Role
• 
  Lee Hyung Chul

  Jin Sang Woo [SW Entertainment President]

  Support Role
• 
  Park Joo Ah

  Park Hyang Ja

  Support Role
• 
  Jang Hyo Jin

  Chu Joon Woo

  Support Role
• 
  Yook Hye Seung

  Che Ri

  Support Role
• 
  Lee Soo Wan

  [Photographer]

  Support Role
• 
  Lee Geum Ju

  [Eun Seok's mother]

  Support Role
• 
  Min Seo Hyun

  Yang So Eun

  Support Role
• 
  Jung Chun Seok

  Lee Won [Jang Enter wannabe actor]

  Support Role
• 
  Ji Il Joo

  [Lee Hyo Ri's manager]

  Support Role
• 
  Choi Shang

  Alex

  Support Role
• 
  Ha Eun Seol Support Role
• 
  Lee Won

  Kwon Oh Seok

  Support Role

Guest Role

• 
  Lee Hyo Ri

  [Herself] (Ep.1)

  Guest Role
• 
  Kim Sung Min

  [Manager]

  Guest Role
• 
  Han Chae Young Guest Role
• 
  Lee Jae Jin Guest Role
• 
  Jeon Hye Bin

  [Herself]

  Guest Role
• 
  Choi Min Hwan Guest Role
• 
  Kim Ah Joong

  [Award ceremony red carpet](Ep.1)

  Guest Role
• 
  Lee Chun Hee

  [Himself] (Ep. 3)

  Guest Role
• 
  Lee Hong Gi

  [Award ceremony red carpet] (Ep. 1)

  Guest Role
• 
  Shin Dong Wook

  [Drama actor] (Ep. 14)

  Guest Role
• 
  Uhm Ji Won

  [Herself] (Ep. 5)

  Guest Role
• 
  Lee Sun Kyun

  [Award ceremony red carpet] (Ep. 1)

  Guest Role
• 
  Daniel Henney

  [Himself] [Award ceremony red carpet](Ep.1)

  Guest Role
• 
  Kang Hye Jung Guest Role
• 
  Park Shi Yeon Guest Role
• 
  Kim Min Joon Guest Role
• 
  Song Chang Eui

  [Himself] (Ep. 11)

  Guest Role
• 
  Kim Jung Eun

  [Herself] (Ep. 16)

  Guest Role
• 
  Yoon Se Ah Guest Role
• 
  Lee Seo Jin

  [Himself ](Ep. 9)

  Guest Role
• 
  Jeon Do Yeon

  [Herself]

  Guest Role
• 
  Jung Chan Woo

  [Fortune Teller]

  Guest Role
• 
  Oh Man Seok

  [Award ceremony red carpet] (Ep. 1)

  Guest Role
• 
  Jung Myung Joon

  [Wants to sign a contract with Oh Seung Ah]

  Guest Role
• 
  Min Dae Shik

  [Entertainment reporter]

  Guest Role
• 
  Jung Jong Yul

  [Umh Ji Won's manager] (Ep. 5)

  Guest Role
• 
  Son Jin Ho Guest Role
• 
  Son Seon Geun

  [S Media CEO]

  Guest Role
• 
  Oh Jung Won

  [Oh Seung Ah's Hairdresser]

  Guest Role
• 
  Lee Chae Won Guest Role
• 
  Jung Jong Hyun

  [Oh Seung Ah's fan]

  Guest Role
• 
  Choi Young Do Guest Role
• 
  Kim Je Dong

  [Press conference moderator] (Ep.15)

  Guest Role
• 
  Lee Seung Hyung

  [Advertiser]

  Guest Role
• 
  Kim Tae Young

  [Doctor]

  Guest Role
• 
  Park Jin Hee

  [Award ceremony](Ep.1)

  Guest Role
• 
  Sung In Ja

  [dislikes Seo Young Eun's drama]

  Guest Role
• 
  Kim Se In

  [New actress visiting broadcasting station] (Ep. 2)

  Guest Role
• 
  Yoon Seol Hee

  [Room salon girl]

  Guest Role
• 
  Seo Jin Wook

  Kim Dae-sik

  Guest Role
• 
  Kim Min Jwa Guest Role
• 
  Cha Woong Ki

  [8-year-old boy]

  Guest Role
• 
  Lee Jung Sung

  [Lawyer]

  Guest Role
• 
  Song Seung Yong Guest Role
• 
  Min Byung Ae

  [A woman who wants a ticket to go to the moon]

  Guest Role

Unknown

• 
  Shin Jong Hoon Unknown
• 
  Yang Eun Yong Unknown
• 
  Kim Do Yeon Unknown
• 
  Lee Sang Eun Unknown
• 
  Lee Dal Hyung Unknown