TV series
Sleepy Princess in the Demon Castle
2020, Japanese, on TV Tokyo.
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.
- Seasons
- 1
- Episodes
- 12
- Episode length
- 24 min
- Status
- Ended in 2020
Absolute Cinema
Drop everything and watch it.
8.3/10 from 143 TMDB viewer ratings.
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Where to watch Sleepy Princess in the Demon Castle
Sleepy Princess in the Demon Castle is streaming on Crunchyroll in India.
Crunchyroll
Crunchyroll Amazon Channel
Amazon Video
Apple TV StoreAvailability in India as of 12 November 2026. Streaming data by JustWatch.
Latest episode
S1 E12: Sleeping Princess of the Demon Castle
Aired 22 December 2020
Seasons 1
Cast & crew
- Inori MinasePrincess Syalis (voice) · 12 ep
- Kaito IshikawaDemon Cleric (voice) · 12 ep
- Yoshitsugu MatsuokaDemon King Tasogare (voice) · 12 ep
- Hiro ShimonoThe Hero Akatsuki (voice) · 12 ep
- Rikiya KoyamaMajiro the Hedgehog (voice) · 12 ep
- Kouichi SoumaFrankenzombie (voice) / Ghost Wrapping Paper (voice) · 12 ep
- Junichi SuwabeCaesar Magician (voice) · 12 ep
- Shinya TakahashiGoblin Serf (voice) · 12 ep
- Chikahiro KobayashiRed Siberian (voice) · 12 ep
- Ayane SakuraAladdif (voice) · 12 ep
- Sayaka OharaNeo Alraune (voice) · 12 ep
- Takeo OtsukaPoseidon (voice) · 12 ep
Details
- First aired
- 6 October 2020
- Last aired
- 22 December 2020
- Network
- TV Tokyo
- Original title
- 魔王城でおやすみ
- Language
- Japanese
- Country
- Japan
- Type
- Scripted
- Rated
- TV-14
Check ratings elsewhere
News & fan talk
What Sleepy Princess in the Demon Castle is based on
Sleepy Princess in the Demon Castle is based on Sleepy Princess in the Demon Castle, a manga series by Kagiji Kumanomata, published by Shōnen Sunday Comics.
Manga series
Sleepy Princess in the Demon Castle
By Kagiji Kumanomata
Published by Shōnen Sunday Comics
Source details from Wikidata and TMDB.
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Sleepy Princess in the Demon Castle: quick answers
Is Sleepy Princess in the Demon Castle worth watching?
Our verdict is Absolute Cinema: Drop everything and watch it. It scores 8.3/10 from 143 TMDB viewer ratings.
How many seasons of Sleepy Princess in the Demon Castle are there?
Sleepy Princess in the Demon Castle has 1 season and 12 episodes, about 24 minutes each.
Is Sleepy Princess in the Demon Castle finished?
Yes. Sleepy Princess in the Demon Castle ended in 2020, so you can watch the whole story.
Which OTT platform is Sleepy Princess in the Demon Castle on?
Sleepy Princess in the Demon Castle is streaming on Crunchyroll in India. (Checked 12 November 2026.)
Sleepy Princess in the Demon Castle parents guide: is it suitable for kids?
Sleepy Princess in the Demon Castle is rated TV-14. Check the rating guidance before watching with young children.
What shows are like Sleepy Princess in the Demon Castle?
If you liked Sleepy Princess in the Demon Castle, try Miss Kobayashi's Dragon Maid, A Centaur's Life, The Great Jahy Will Not Be Defeated!.
What is Sleepy Princess in the Demon Castle based on?
Sleepy Princess in the Demon Castle is based on Sleepy Princess in the Demon Castle, a manga series by Kagiji Kumanomata, published by Shōnen Sunday Comics.