Sleepy Princess in the Demon Castle poster

Series profile

Sleepy Princess in the Demon Castle

8.3/ 102020Episode runtime

AnimationComedySci-Fi & Fantasy

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.

Visual gallery

Behind the frames

8 stills

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The cast

Faces behind the story

Inori Minase

Inori Minase

Princess Syalis (voice)

Kaito Ishikawa

Kaito Ishikawa

Demon Cleric (voice)

Yoshitsugu Matsuoka

Yoshitsugu Matsuoka

Demon King Tasogare (voice)

Hiro Shimono

Hiro Shimono

The Hero Akatsuki (voice)

Rikiya Koyama

Rikiya Koyama

Majiro the Hedgehog (voice)

Kouichi Souma

Kouichi Souma

Frankenzombie (voice) / Ghost Wrapping Paper (voice)

Junichi Suwabe

Junichi Suwabe

Caesar Magician (voice)

Shinya Takahashi

Shinya Takahashi

Goblin Serf (voice)