• 
  Yoshimasa Hosoya

   Arata Kasuga
• 
  Yôko Hikasa

   Yamana, Mira (voice) (as Yoko Hikasa)
• 
  Yumi Hara

   Lilith Asami (2014) (voice)
• 
  Yoshitsugu Matsuoka

   Arata Kasuga (2014) (voice)
• 
  Ryôka Yuzuki

   Fudou, Akio (voice)
• 
  Nao Tôyama

   Sherlock, Liselotte (voice)
• 
  Noriko Shitaya

   Arin Kannazuki
• 
  Aya Uchida

   Arin Kannazuki (2014) (voice)

• 
  Ai Kayano

   Lilith Asami
• 
  Yoshimasa Hosoya

   Arata Kasuga
• 
  Ayane Sakura

   Kazama, Levi (voice)
• 
  Rie Murakawa

   Kurata, Yui (voice)
• 
  Aya Suzaki

   Sherlock, Serina (voice)
• 
  Ayaka Suwa

   Kasuga, Hijiri (voice)
• 
  Shinichirô Miki

   Headmaster (9 episodes, 2014)

• 
  Cynthia Martinez

  11 episodes, 2014
• 
  Patricia Duran

  12 episodes, 2014
• 
  Allison L. Sumrall

  13 episodes, 2014
• 
  Cameron Bautsch

  13 episodes, 2014
• 
  Brittney Karbowski

  13 episodes, 2014
• 
  Chelsea McCurdy

  12 episodes, 2014
• 
  Carli Mosier

  13 episodes, 2014
• 
  Jad Saxton

  12 episodes, 2014
• 
  Christina Stroup

  13 episodes, 2014
• 
  Kregg Dailey

  9 episodes, 2014
• 
  Patricia Duran

  12 episodes, 2014-2015
• 
  Chinatsu Akasaki

  Ilia
• 
  Nanami Yamashita

  Master Liber
• 
  Rie Kugimiya

  Sora