Sleepy Princess in the Demon Castle
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.
Watch trailerWhere to watch in 🇺🇸 United States
Top cast
Inori Minase
Princess Syalis (voice)
Kaito Ishikawa
Demon Cleric (voice)
Yoshitsugu Matsuoka
Demon King Tasogare (voice)
Hiro Shimono
The Hero Akatsuki (voice)
Rikiya Koyama
Majiro the Hedgehog (voice)
Kouichi Souma
Frankenzombie (voice) / Ghost Wrapping Paper (voice)
Junichi Suwabe
Caesar Magician (voice)
Shinya Takahashi
Goblin Serf (voice)
Chikahiro Kobayashi
Red Siberian (voice)
Sayaka Ohara
Harpy (voice)
Frequently asked questions
Where can I watch Sleepy Princess in the Demon Castle online?
As of November 4, 2026, Sleepy Princess in the Demon Castle is available to stream on Crunchyroll and Crunchyroll Amazon Channel in United States. Use the country selector above to check availability in other regions — streaming rights are licensed per country, so catalogues differ.
Is Sleepy Princess in the Demon Castle on Netflix?
No — Sleepy Princess in the Demon Castle is not currently on Netflix in any of the countries we track. In United States it streams on Crunchyroll and Crunchyroll Amazon Channel instead.
Can I rent or buy Sleepy Princess in the Demon Castle online?
Yes. In United States, Sleepy Princess in the Demon Castle is available for digital purchase on Amazon Video and Apple TV Store.
In which countries can I stream Sleepy Princess in the Demon Castle?
As of November 4, 2026, Sleepy Princess in the Demon Castle is included with a streaming subscription (or free with ads) in Argentina, Brazil, Canada, Chile, Colombia, Germany, Italy, Mexico, Portugal, Spain, United Kingdom, and United States, among the countries we track.
Streaming availability last checked on November 4, 2026. Catalogues change frequently — data from TMDB and JustWatch.
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