Maoujou de Oyasumi
English title: Sleepy Princess in the Demon Castle
Japanese title: 魔王城でおやすみ
Alternative titles: Sleeping in Devil's Castle
Type: TV
Source: Manga
Episodes: 12
Status: Finished Airing
Aired: Oct 6, 2020 to Dec 22, 2020
Broadcast: Tuesdays at 02:00 (JST)
Duration: 23 min per ep
Rating: PG-13 - Teens 13 or older
Studios: Doga Kobo
Producers: Lantis, FuRyu
Licensors: Funimation
Genres: Comedy, Fantasy
Themes: Parody
Demographics: Shounen

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.

[Written by MAL Rewrite]