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魔王城でおやすみ [Maō-jō de Oyasumi] #1

Sleepy Princess in the Demon Castle, Vol. 1

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She decides to while away the hours by sleeping, but getting a good night’s rest turns out to be a lot of work! She begins by fashioning a DIY pillow out of the fur of her Teddy Demon guards and an “air mattress” from the magical Shield of the Wind. The princess’s hapless demonic guards soon discover that their captive expects to be treated like, well, a princess. Things go from bad to worse—for her captors—when some of Princess Syalis’s schemes end in her untimely—if temporary—demise and she chooses the Forbidden Grimoire for her bedtime reading…

176 pages, Kindle Edition

First published September 16, 2016

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Kagiji Kumanomata

50 books30 followers

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5 stars
473 (41%)
4 stars
348 (30%)
3 stars
243 (21%)
2 stars
60 (5%)
1 star
7 (<1%)
Displaying 1 - 30 of 155 reviews
Profile Image for Mehsi.
16.2k reviews478 followers
October 30, 2016
A princess, kidnapped by a demon king.

Now I know what you will be thinking, the poor thing. Is anyone going to save her? How will she survive? Well, um, throw out all those ideas, and just worry about the monsters and the demon king. :P

Yes, our princess isn't so weak, so silly, instead she is awesome, and she is a danger to all the critters in the castle. She is on a quest to sleep well, and she will do anything for it. Including cutting up living blankets, brushing demon teddy bears until they drop their fluff, cutting off capes, stealing precious artifacts, and so much more. Every chapter features a new quest, and the hilarious situations that come with it.

Did I mention she keeps dying? Yes, in her quest for new stuff to sleep better she keeps falling into lava, or falls asleep on deadly mushrooms.

The girl is totally awesome, and I actually don't want her to be saved. She is just too fabulous and kick-ass. She totally isn't afraid of the monsters.

In the meantime we see the humans still trying to save the princess, and the demons making plans to thwart the humans. :P

If anything, I agree with a comment I saw somewhere, that someone should save the demons, and the demon king. Before they get killed any further.

The art is pretty awesome, I do love the style!

This manga is perfect if you want to laugh your butt off, and if you want to know what the next thing is that the princess will do.

Review first posted at https://twirlingbookprincess.com/
Profile Image for EvaN.
116 reviews3 followers
May 15, 2025
I looove the art. Every chapter is independent and quite small, which I always prefer. Our main character is acting like a toddler and it is very funny.
This is more like a 4,5 star to me since it is light and easy to read, but not something I would think after I finish reading.
Profile Image for Andrew.
Author 51 books4,298 followers
June 19, 2018
Hilarious

Absolutely hilarious RPG deconstruction from the perspective of a "captured" princess. I loved it and can't wait to read more.
Profile Image for Freya.
354 reviews80 followers
September 22, 2024
3,5 stars

Hilarious and could have easily been a whole series so it took me a while to read. I enjoyed the antics of our reckless princess, trying to get the best night’s sleep of her life. But I did feel like, the lack of resistance from the demons and her being easily revived and many other things going too easily, did result in a less exciting read than it could have been. But totally worth the read! I laughed a lot reading this one and it’s a very full and detailed story and illustrations. Very quirky and cute at times, too!
Profile Image for Mir.
5,015 reviews5,379 followers
Read
February 24, 2021
I must be missing something... It seems like a repeated variation of the same not-that-funny story? The princess can't sleep so she mutilates some supernatural creature to get material for some ridiculously elaborate pillow/bed/blanket.
Profile Image for Rereader.
1,475 reviews227 followers
September 22, 2020
The artwork was cute and the first two-three chapters were amusing, but the premise and humor got old pretty fast. I understand that manga is super repetitive, especially comedy/slife of life series, but unlike others the repetition here made it LESS humorous. Also, Princess Syalis has little to no to personality other than being sadistic. The demons were pretty entertaining, so that was a plus, and I did love the JRPG style of storytelling and worldbuilding. Unfortunately, it's not enough to make up for the rest of the problems I had.

Not a bad series and I'm sure most people will find it more entertaining than I did, but this isn't for me.
Profile Image for Goatllama.
790 reviews43 followers
Did Not Finish
June 3, 2026
I am NOT doing 400+ chapters of this. No way, no how. Zzzzzzzzzzzzzzzzz
Profile Image for Metal Nyankos.
75 reviews15 followers
October 29, 2018
There is a lot to love in this manga. The art, the characters, and especially the tone. A manga like this can't be terribly easy to write - you're taking the 'damsel in distress' trope and not only subverting it, but doing so in the most spectacularly comedic way that takes the mickey out of what is a normally very serious storytelling device.

The story is simple: Princess Syalis has been captured by the titular Demon King. He's using her the way most captured princesses are used in these types of tales: as bait for a hero. Except, very quickly, we realize not only is she hardly a prisoner, but that, in most ways, the castle she finds herself in is a reprieve from her daily drudgery as a princess. Not only can she finally get some rest (something we can all empathize with in a deep, primordial way), but she no longer has to worry about carrying out the duties of a princess. She can dedicate herself to her one, true passion: sleeping.

What manga-ka Kagiji Kumanomata does so well is showcasing how the princess is anything but a damsel-in-distress and, in fact, she could quite easily waltz out of the castle whenever she likes thankyouverymuch. Except why would she leave when she can finally get the perfect shut-eye using all sorts of magically enhanced objects?

The princess aside, one thing I really enjoyed in Sleepy Princess in the Demon Castle, Vol. 1 is how desperately the Demon King's is trying to be a classic villain. He's trope-savvy and he knows exactly how stories like this should play out...except no matter what he does, no matter what his plans, or what he expects of the princess to do, nothing works out. He is, like a lot of his minions, a rather sympathetic character who is just trying to be the best Demon King he can be goshdarnit!

It's just this kind of manga that keeps me coming back for yet more manga. It's fun, lighthearted, and cute. The perfect manga for the start of the winter season.
3,509 reviews
June 29, 2019
A princess who has been captured by the demon king just wants to have a good night's sleep

This is a cute and funny book. While you think the stories would be about the demons torturing the princess, she actually ends up 'torturing' them by escaping her cell and destroying artifacts in her drive for the best bed, best sheets, etc.

My favorite part was when she realized that she could brush the teddy demons to get high quality stuffing for her pillow. And then the teddy demons follow her around asking for "More! Brush us more!". If you read that and think 'adorable', you should read this book. If instead you roll your eyes, skip it.

I'm not sure how well this idea will cover several volumes, but I'll give the second one a try.
40 reviews
June 25, 2018
I'm so glad I decided to pick up this manga! Of all the mangas I've read, this one is now my favorite. It's the perfect lighthearted, comedic read that I was looking for!
Profile Image for Laura A. Grace.
2,159 reviews354 followers
March 1, 2024
This was fun!

I definitely prefer the anime because of how vibrant it is, but I really enjoyed all the character profiles in this one and seeing how faithful the anime adaptation was! Makes me feel good about sticking with the anime because even though I enjoyed this, I love hearing the characters come to life with voices and such.

Also just have to say that the Demon Cleric and the Demon King are my favorite characters! I don't know why but outside of our Princess's actions, they make me laugh the most!

Had a fun time reading this one!
Profile Image for Wordsworn.
351 reviews53 followers
September 29, 2023
Fairly light and very silly. Pokes fun at the very concept of a "demon king" and heroes and such in a very unique way.

...Also, as someone who struggles to sleep restfully........gosh, I can understand a LOT of what the princess does. I get you, girl! X'D

TL;DR, I'm not falling all over myself to read more, but it's funny and I might pick up the next one from the library sometime when I need a laugh.
Profile Image for Selena Pigoni.
1,942 reviews263 followers
October 27, 2020
So this is a silly manga that manages to keep the central gag (the princess needs something to sleep) funny throughout the volume. It's mostly loving jabs at video game tropes, and the occasional fantasy novel gag.
Profile Image for Sesana.
6,682 reviews326 followers
October 21, 2020
Essentially a one joke manga: the captured princess cares way more about getting a good sleep than escaping from the demons. This sort of thing always wears out its welcome eventually, but I did like this initial volume more than I've liked other, similar books. For one, it's very creative, with a huge range of fantasy characters. The princess may be obsessed with sleep, but she's also very clever and determined. While the premise, that she only cares about sleeping, is inherently dumb, the characters aren't, and that keeps this from floundering after a chapter or two. Ultimately, it's still a single joke stretched out over thirteen chapters, but it at least does it in a fairly smart way.
9 reviews1 follower
May 14, 2020
I adore this book. It is ridiculous and I NEEDED that. The Princess is a MOOD. I honestly can't remember the last time reading a manga had me laughing so much. I have read up to book 10. I recommend this book for all ages though there are some jokes that may fly over the heads of younger audiences :P . It pokes fun at over used tropes and does not take itself too seriously.

The art is very consistent throughout the books. Personally I love the art choices, its part of the humor.

11 out of 10. A great read!

Profile Image for Mr. Manga_Man.
13 reviews
January 6, 2019
Sleepy Princess in the demon castle is a well written and drawn comedy about a human princess that has been kidnapped by the dread monsters she has been locked away in the castle were she causes mischief in order to get a good nights sleep. This series was recommended to me from the viz manga sampler of 2019 all in all I am rating it 4 stars
Profile Image for Tib.
769 reviews73 followers
February 18, 2021
I started watching the anime because of a tiktok, only to find out my library has the manga series available on Libby, so I got right on that. This is such a wacky and ridiculous story and I can't get enough of it!
Profile Image for Erin.
98 reviews
June 2, 2023
Cute, hilarious, all around new fav
Profile Image for Emily.
68 reviews1 follower
February 12, 2023
I’m gonna buy more of this series on my next paycheck
Displaying 1 - 30 of 155 reviews