• 
  Ok-Dam Baek

   Lee Ha-ji (2015) (unknown episodes)
• 
  Bo-yeon Kim

  12 episodes, 2015
• 
  Tae-Yeong Ki

  12 episodes, 2015
• 
  Yoon-seo Kim

  12 episodes, 2015
• 
  Seung-Woo Lee

  10 episodes, 2015
• 
  Kyungjoon

  10 episodes, 2015
• 
  Da-Sol Jeong

  10 episodes, 2015
• 
  Soo Young Ryu

  12 episodes, 2015

• 
  Du-shim Ko

  12 episodes, 2015
• 
  Yong-Joo Lee

  10 episodes, 2015
• 
  Eun-seo Son

  12 episodes, 2015
• 
  Yoon Seo Kim

  12 episodes, 2015
• 
  Da-som Kim

  12 episodes, 2015
• 
  Hee Sung Kwak

  12 episodes, 2015
• 
  Daniel Joey Albright

  Private Academy English Teacher Joe

• 
  Hye-in Jeon

  Oh In-Young (young)
• 
  Yeong-Seon Kim

  Kim Se-mi (2015)
• 
  Young Sun Kim

  Kim Se-mi (2015)