Review: A Hidden Gem of Anime ‘Sleepy Princess in the Demon Castle’

“Sleepy Princess in the Demon Castle” is a 2020 anime that was swept under the radar during release despite its enjoyable yet simple storyline.

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Taylor Wells

“Sleepy Princess in the Demon Castle” episode eight on TV.

by Taylor Wells, Reporter, Copy Editor

Anime has grown through the years and has become popular ingr modern media. Some titles have garnered so much fame that even someone who hasn’t watched anime would have heard the name. “Attack on Titan” and “My Hero Academia” are two very popular shows with “My Hero Academia” having 1,955,92 reviews on MyAnimeList.

There are some shows that aren’t as popular and were seemingly watched and forgotten about. One of these shows is called “Sleepy Princess in the Demon Castle” or “Maou-jou de Oyasumi” in Japanese. 

“Sleepy Princess in the Demon Castle” was ranked at 8/10 on MyAnimeList with 88,727 reviews. It was ranked at 7.5 on IMDb with 617 reviews. On AniList it has a 78% with 17,303 reviews. 

It’s been rated highly favorable yet barely has as many reviews as other shows that aren’t mainstream. For example, “Made in Abyss” is one of the lesser mainstream shows yet has an 85% rating on AniList with 112,067 reviews. 

The anime follows princess Syalis as she is kidnapped by the demon king, Twilight. Each episode is about Syalis trying to find better ways to sleep. Antics range from wandering around the castle for materials for a bed, to starting an ice revolution all because it’s a hot day and she wanted some ice for her jail cell. 

The plot is very simple yet holds your attention as the characters and Syalis herself are all enjoyable to watch. Syalis is happy to be kidnapped as it means she doesn’t have to do any work as a princess and her laid back personality focused all around getting a good night’s rest makes it funny when she unironically terrorizes the inhabitants of the demon castle. 

The art style, color direction, and background music are all very well made for a 12-episode show with such a straightforward idea. The opening theme is catchy and upbeat, performed by Da-iCE with the main vocals being sung by the Japanese voice actress of Syalis, Inori Minase.

The English and Japanese dub are both pleasant to listen to with each having their own sort of flare to them. The anime is available in Japanese and English dub on Funimation and Crunchyroll.

There is more to the story than Syalis trying to sleep and is worth the watch as a standalone fantasy slice of life comedy. If you’re looking for a small laugh with nothing to do, you may want to check out “Sleepy Princess in the Demon Castle.”