• 
  Ha Ji-Won

  Oh Ha-na
• 
  Jin-wook Lee

   Choi Won
• 
  Soo-Hyun Choo

   Lee So-eun
• 
  Ju-hie Seo

   Kim Soo-mi
• 
  Jeong-geun Sin

   Lee Jung-geun
• 
  Joo-seung Lee

   Oh Dae-Bok
• 
  Kyeong Jin

   Choi Mi-hyang
• 
  Kyun-Sang Yoon

   Cha Seo-hoo

• 
  Rae-yeon Kang

   Kang Na-young (16 episodes, 2015)
• 
  Hee-soo Jang

   Choi Won's mother (16 episodes, 2015)
• 
  Jang Sung-Won

   Bong Woo-Jin (16 episodes, 2015)
• 
  In-Young Hong

   Wang Bit-Na (16 episodes, 2015)
• 
  Woo Hyeon

   Byeon Woo-Sik (16 episodes, 2015)
• 
  Seo Dong-gun

   Jang Dong-gun (16 episodes, 2015)
• 
  Go Won-Hee

   Yoon Min-Ji (16 episodes, 2015)

• 
  Woohee

   Hong Eun-jung (16 episodes, 2015)
• 
  Lee Dong-jin

   Song Min-gook (16 episodes, 2015)
• 
  Hyeon Woo

   Byeon Woo-Sik (16 episodes, 2015)
• 
  Won-hee Ko

   Yoon Min-Ji (16 episodes, 2015)
• 
  Woohee

  16 episodes, 2015
• 
  Seong-won Jang

  16 episodes, 2015
• 
  Yoshihiro Akiyama

  Choo Sung-Hoon
• 
  Seok-cheon Hong

  Airplane passenger
• 
  Ju-wan On

  On Joo-Wan
• 
  Sang-Hyun Yoon

  Yoon Sang-Hyun
• 
  Eun-Kyung Shin

  Goo Yeon-Jung
• 
  Kang Ye-Bin

  Choi Won's junior in university