Aurora Suya Rhys Kaymin
main character
TV
7.8
My TrackerPLANNING
Episode: 0 / 12
My Score:
Anime DetailsFINISHED
- Format
- TV series
- Episodes
- 12
- Episode length
- 24 min
- Total watch time
- 4 h 48 min
- Status
- Finished
- Aired
- October 6, 2020 – December 22, 2020
- Season
- Fall 2020
- Source
- Manga
- Studio
- Doga Kobo
- Director
- Mitsue Yamazaki
- Original creator
- Kagiji Kumanomata
- Music
- Yukari Hashimoto
- Age rating
- PG — Teens 13 or older
- Country
- Japan
- AniList score
- 78/100
Estimated watch time
4h 48m
⚡ 3 days at 5 eps/day
Tags & Tropes
Ojou-sama96%Female Protagonist95%Prison95%Episodic94%Parody92%Kuudere90%Demons90%Slapstick87%Iyashikei84%Cute Girls Doing Cute Things77%
TVFINISHED2020 FALL7.8 / 10 AniList score
Sleepy Princess in the Demon Castle
魔王城でおやすみ• Maou-jou de Oyasumi
Synopsis
Sshhh! Princess Syalis is trying to get a good night's sleep. Some shut-eye. Forty winks. Catch some Z's. Long ago in olden times when people and demons lived together in—well, disharmony, really—a demon king kidnaps a human princess and imprisons her in his castle. Bereft, the princess's subjects beat their chests in anguish…until a hero arises to spearhead Project Rescue Our Princess! While waiting for her knight in shining armor, what's an imprisoned princess to do...? Teddy-bear guards with bat wings are all very well, but her dungeon cell is bo-o-o-ring! So, she decides to wile away the long hours by sleeping. Now if only she could get comfortable…and didn't suffer from insomnia... (Source: VIZ Media)
Trailer
Watch on YouTubeMain cast & voice actors
Should you watch Sleepy Princess in the Demon Castle?
Yes, if you enjoy comedy, fantasy and slice of life, especially stories with ojou-sama, female protagonist, prison.
Fans rate it highly: 78/100 on AniList, with 67% of 29.8K ratings at 8/10 or higher. It's the #19 highest-rated anime of 2020.
About 6.1% of viewers drop it, which is typical.
At about 4 h 48 min in total, it is a short commitment — a weekend binge.
Where to Watch Officially
Availability, audio and subtitles vary by region and service.
Episodes
12 episodes are listed.
Creators & key staff
- Original creator
- Kagiji Kumanomata
- Director
- Mitsue Yamazaki
- Series composition
- Yoshiko Nakamura
- Character design
- Ai Kikuchi
- Music
- Yukari Hashimoto
Related entries
Opening & ending themes
Openings (1)
- OP1“Kaimin! Anmin! Suya Rhyst Seikatsu” by Inori Minase
Endings (1)
- ED1“Gimmme!” by ORESAMA · eps 1-11
Theme data from AnimeThemes.moe.
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Sleepy Princess in the Demon Castle FAQ
How many episodes does Sleepy Princess in the Demon Castle have?
Sleepy Princess in the Demon Castle has 12 episodes of about 24 minutes each, roughly 4 h 48 min in total.
How long does it take to watch Sleepy Princess in the Demon Castle?
About 4 h 48 min back to back. At two episodes a day it takes 6 days; at one hour a day, about 5 days.
Is Sleepy Princess in the Demon Castle finished?
Yes. Sleepy Princess in the Demon Castle has finished airing — the final episode aired December 22, 2020.
Is there a season 2 of Sleepy Princess in the Demon Castle?
No sequel is listed for Sleepy Princess in the Demon Castle as of October 2026. You can continue the story in the original manga.
Is Sleepy Princess in the Demon Castle based on a manga?
Yes. Sleepy Princess in the Demon Castle adapts the manga by Kagiji Kumanomata.
Who animated Sleepy Princess in the Demon Castle?
Sleepy Princess in the Demon Castle was animated by Doga Kobo and directed by Mitsue Yamazaki.
Who sings the opening of Sleepy Princess in the Demon Castle?
The opening, "Kaimin! Anmin! Suya Rhyst Seikatsu", is performed by Inori Minase.
Where can I watch Sleepy Princess in the Demon Castle?
Sleepy Princess in the Demon Castle is listed on Crunchyroll, Bilibili TV. Availability varies by region — check the streaming links on this page.