Sleepy Princess in the Demon Castle OP Theme Sounds as Cute as the Series Looks

Sleepy Princess in the Demon Castle OP Theme Sounds as Cute as the Series Looks

A new promo for the TV anime series Sleepy Princess in the Demon Castle was posted this week, and the show looks adorable.

The fantasy comedy series premieres Oct. 5 on TV Tokyo.

The series features Inori Minase as the titular fairy tale princess, who just wants to get some sleep.

The promo reveals that Minase also sings the opening theme song, Kaimin! Anmin! Suyalist Seikatsu, in character

(Warning: Despite the scary-looking thumbnail image, the following video link is packed with sugar.)

The song title can be translated as “Good Sleep! Sleep Well! Syalist Life.” Syalist (or possibly spelled Suyalist) would appear to be a made-up word referencing Princess Syalis, the heroine of the show.

Another promo for the series was posted in July.

So, What’s Going On Here?

Sleepy Princess in the Demon Castle is an anime adaptation of a manga, Maoujou de Oyasumi.   The manga was picked up by Viz for an English language translation, and you can get a free sample of the cuteness here.

The story takes place in a fairy tale fantasy world. Princess Syalis was kidnapped by a demon king.

Naturally, a hero will arise to rescue the princess.  But, in the meantime, the princess just wants to get some sleep.

Unfortunately, she has insomnia.  Much of the comedy in the series stems from her extreme attempts at making things just right for a good sleep.

In the manga, she is also apparently stronger and/ or more powerful than the demons and monsters in the castle.

Sleepy Princess in the Demon Castle OP Theme Sounds as Cute as the Series Looks

More Details

Voice actress Minase has performed Chino in Is the Order a Rabbit?, Hestia in Is It Wrong to Try to Pick Up Girls in a Dungeon?, and Rem in Re:Zero.

Personally, I think the purple-haired princess vaguely resembles Chino. (Since the princess has white hair in the manga, that could be a deliberate reference.)

Yoshitsugu Matsuoka plays Demon King Twilight.  He also voices Kirito in Sword Art Online. Hiro Shimono (Zenitsu in Demon Slayer) performs Sir Dawner, an idiot knight who’s supposed to rescue the princess.

Mitsue Yamazaki directs the anime series, and the animation is by Doga Kobo.

The duo ORESAMA sings the ending theme song, Gimmme!

Kagiji Kumanomata  created the manga. He also did some weird thing called Nuigurumi Crash.

The manga started in 2016 and is running in Weekly Shonen Sunday.

If Crunchyroll, Funimation, or somebody else has picked up the anime series for North American streaming, nobody has mentioned it.  It doesn’t appear to have a licensed DVD distributor, either.

Kumano Koji, Shogakukan / Maoujou Sleep Promotion Committee; FuRyu Anime Channel on YouTube; Purple One Star on YouTube; Viz
Join Our Discussions on Discord