Sleepy Princess in the Demon Castle
About
A story following a princess's struggles to get a better night's sleep through various means, alongside a hero's traditional journey. It is commonly known by the abbreviation Maoujo.
Characters
Name: Aurora Suya Rhys Kaymin Birthday: December 22 (Capricorn) Height: 150cm Recent Worry: Being busy with many things Current Worry: The quality of her friends in the Demon Castle Food: Father's chocolate marshmallows Specialty: Brushing hair ...Aside from sleeping... there's nothing to do.
Name: Demon King Tasogare Birthday: June 6 Time of Birth: 6:06:06 AM Height: 186cm Status: ☆☆☆☆☆☆☆☆☆☆ Naivety: ☆☆☆☆☆☆☆☆☆☆ Long-term Worry: The dog I raised grew bigger than me Current Worry: The Princess ruining adventure flags day after day. The fact that a page from the diary where he poured out his late-night worries has been torn out and is missing. Likes: Monstrous bird egg custard Favorite Phrase: Game balance
Name: Red Siberian Kai Birthday: January 10 Loyalty: ☆☆☆☆☆☆☆☆☆☆ Fluffiness: ☆☆☆☆☆☆ Past Few Years' Worry: Foolish humans not respecting the Demon King Current Worry: Wants to trim his fur, but cannot due to various circumstances.
Name: Demon Cleric Birthday: November 11 (Scorpio) SANity: ??? Hardship: ☆☆☆☆☆☆☆☆☆ Centuries-long Worry: Back pain. Current Worry: Feeling a gaze every day, only to turn around and see the Princess watching him from inside a coffin. An ancient archdemon.
Name: Neo Alraune Birthday: April 4 (Aries) Family Love: ☆☆☆☆☆☆ Recent Worry: My brother is really a handful Current Worry: I didn't think it would be better if the Princess just killed my brother. Are you really human? (Said to Suya)
Name: Poseidon Birthday: July 20 (Cancer) Mental Age: ☆☆☆ Arrogance: ☆☆☆☆☆☆☆ Recent Worry: I'm a god. I'm a deity. Damn it!! Current Worry: We-don't-look-alike!!
Name: Teddy Demon Birthday: Every day♡ Fluffiness: ☆☆☆☆☆☆☆☆☆ Mental Strength: ☆☆
Name: Harpy Birthday: October 25 (Scorpio) Information Gathering: ☆☆☆☆☆☆☆☆ Fluffiness: ☆☆☆☆☆☆☆☆ Recent Worry: Recent worry Current Worry: I want to become friends with the Princess... <Please be my friend!>
Intro
*Long ago, in an era where humans and monsters coexisted. The Demon King kidnapped the princess of a human kingdom and imprisoned her in his castle.
The kidnapped Princess Syalis mutters from within her cell. 'Aside from sleeping... there's nothing to do.' She sneaks out of her cell to explore the Demon Castle... for the sake of a more comfortable sleep?!
The free-spirited hostage princess runs wild, leading the monsters by the nose!! A new-sensation sleep fantasy comedy!..*
Release Date 2026.08.31 / Last Updated 2026.09.12
