When young Princess Syalis is kidnapped and imprisoned by the Demon King, she's rather indifferent about her situation. But she quickly comes to a terrible realisation—she can't sleep soundly in such an uncomfortable bed! She soon escapes her cell and sets off in search of ways to improve her sleep quality, leaving the castle's inhabitants, and even the Demon King himself, scrambling to keep the unruly princess out of trouble during her chaotic adventures.
Full Cast of Sleepy Princess in the Demon Castle
Sayaka Ohara
Neo Alraune (voice) , Harpy (voice)
Masashi Yamane
Minotauro (voice)
Ayane Sakura
Aladdif (voice)
Kaito Ishikawa
Demon Cleric (voice)
Rikiya Koyama
Majiro the Hedgehog (voice)
Kisho Taniyama
Hades (voice)
Hiro Shimono
The Hero Akatsuki (voice)
Yoshitsugu Matsuoka
Demon King Tasogare (voice)
Shinya Takahashi
Goblin Serf (voice)
Junichi Suwabe
Caesar Magician (voice)
Shin-ichiro Miki
Hypnos (voice)
Chikahiro Kobayashi
Red Siberian (voice)
Inori Minase
Princess Syalis (voice)
Takeo Otsuka
Poseidon (voice)
Kouichi Souma
Frankenzombie (voice) / Ghost Wrapping Paper (voice)
Crew of Sleepy Princess in the Demon Castle
Full backstage crew list →- Released October 06, 2020