Completed
“Kidnapped princess cares only about perfect sleep, using castle monsters as bedding and crafting materials.”
Sleepy Princess in the Demon Castle
魔王城でおやすみ
7.95
799 rank · 246,771 viewers · 2,555 favorites
Comedy
Fantasy
Parody
Shounen
Would You Love or Hate This?
AI-powered analysis tailored to your taste
Based on your preference for character-driven stories with layered emotional arcs, this title's exploration of identity and belonging would deeply resonate. The pacing mirrors series you've rated highly, and its thematic depth aligns with your appreciation for nuanced storytelling...
However, the slow initial episodes might test your patience given your history of dropping shows that don't hook you early. The art style shift in the middle arc could also be a concern...
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Honest pros & cons
Based on your library
Synopsis
Kidnapped princess cares only about perfect sleep, using castle monsters as bedding and crafting materials.
The Demon Lord Tasogare's castle is a dark and frightening place, filled to the brim with various monsters. Any soul unfortunate enough to be imprisoned here is sure to be terrified by the horrors within. However, the human princess Aurora Suya Rhys "Syalis" Kaymin is a different case. Rather indifferent to her situation, Syalis worries about one thing and one thing only—sleep. Ever since the demon lord kidnapped her from her kingdom, she has not had a single good night's rest. To alleviate her dozen dozing issues, the princess makes do with what she can find in the castle. Whether it be the fur of fluffy demonic teddy bears or the silky, blanket-like bodies of ghost shrouds, everything is but a means to ensure a peaceful slumber. With so many potential materials to craft items that can help her sleep at her disposal, nothing will stop the sleepy princess—not even death.
What people say
Community consensus
Derived from 73 sampled reviews
8.7
/10
What 73 viewers settled on.
99%
recommend
Score distribution
median 9
mode 9
σ 1.18
Agreement
Mostly aligned
σ 1.18 · some divergence
The polarity gap
4.8 pts
Recommenders 8.8 · others 4.0
Yes
No
Score over time
↑ 0.70
Running avg · Oct 2020 → Mar 2025
Snap verdicts
· shortest highly-rated reviews
- 7 “I'd have to say that it's a relaxing anime to watch. The main story is just about a little princess finding the best way to sleep but the lack of story is made up with great art work and a wide...”
- 7 “If you like a change of mood, try to watch this since it is quite funny anime, a princess is kidnapped by a demon but is treated as a special guest by the demon, and all the princess could think...”
- 9 “This show is so adorable it has literally purified my soul. the main character is unique and interesting and I love watching it. Both the opening and ending are great. The Princess of the humans is...”
Verbosity
Short · 40%
Medium · 34%
Long · 26%
Watch Order & Related
Explore the Sleepy Princess in the Demon Castle universe
Cast
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See all credits →Production slate
- Format 12 × 23′ eps × min
- Total runtime 4h 36m all episodes
- Aired Oct 2020 – Dec 2020 Fall 2020
- Source Tv media type
- Rated PG 13 - Teens 13 or older
- Ref. BS-15682 catalog
Licensed by
- Funimation Licensor