Maoujou de Oyasumi

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]

Kaymin, Aurora Suya Rhys Main

Minase, Inori Japanese

Demon Lord Tasogare Main

Matsuoka, Yoshitsugu Japanese

Debi Akuma Supporting

Minase, Inori Japanese

Demon Cleric Supporting

Ishikawa, Kaito Japanese

Sakkyun Supporting

Ozawa, Ari Japanese

Great Red Siberian Supporting

Kobayashi, Chikahiro Japanese

Harpy Supporting

Ohashi, Ayaka Japanese

Suima Supporting

Miki, Shinichiro Japanese

Alraune, Neo Supporting

Ohara, Sayaka Japanese

Scissors Sorcerer Supporting

Suwabe, Junichi Japanese

Cook, Justin Producer

Iizuka, Aya Producer

Kamata, Hajime Producer

Beniya, Yoshikazu Producer

Reviews

May 29, 2025

Sir_PeepeeLord

Recommended

The rewatch value for this is insanely high. Each episode is so comfy to sit through, and this cozy mood is very consistent throughout; nothing felt out of place.

The story is quite simple and straight-forward, and the same can be said for the characters to be honest; this isn't really a detriment to the show, as it is a comedy after all, and the simplistic nature is very much a merit in this case. Each episode can be summed up with the princess trying to achieve the best sleep she can get while causing havoc and mayhem for everyone else in the castle; it ... fits the wacky trope that she herself is the monster in the situation and not the ones holding her prisoner. Endearing moments are sprinkled throughout, especially within episodes that feature the Demon king and his allies aiding the princess in her sleeping escapades; they feel like a weird close-knit family, and I think it's adorable.

It's very well worth the watch and I really hope for a season 2 someday.

Reviewer’s Rating: 10

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Sep 3, 2023

Rhapsody-

Mixed Feelings

“I’m not locked in here with you… You’re locked in here with me!”

The tittle is a big lie, don’t get fooled. Maoujou de Oyasumi is not about a moe kidnapped princess trying to get a good sleep. It is not. Of course not. Absolutely not. This is about a psychopath, serial murder going rampage, mercilessly killing and torturing helpless and unaware demons, without any sort of empathy or regret in her big, star-speckled purple eyes. Her cute, harmless appearance and monotonous, expressionless voice don’t stop her from doing the most atrocious actions, from stealing important army stuffs, torturing people under questionable excuses, or emotionally manipulating ... people with noticeable self-esteem issues… to ripping off bodies to use them as materials, making people explode, flaying alive someone’s skin then wear it, and convincing a platoon to use their leader’s limbs (previously dismembered by her, of course) as building material. There’s no demon, not even the Demon Lord itself, who can run away from her visceral outrage.

Savage. This girl is really savage.

…..

This may sound as a top tier comedy material, but in fact, this is an undertone the serie uses in a very shallow way. As a personal concept, comedy should be more than “it made laugh, hence it’s good”, in a comedy, execution and wit are keys in order to make a joke funny and keep the humoristic mood fresh. if a friend tells me a bad joke, so bad it made me laugh, doesn’t mean he’s a good comedian, but if he manages to pull out expressions or use body language to make the joke a little bit funnier, then he will success. This serie is just that: good and original concept, but rather simplistic and poor execution, wasting most of its potential, and while it is successful to provoke some laughs, it’s not enough to put the whole show in a high place.

The serie format is like a videogame, where every time there is a new quest, with -allegedly- new goals as the difficulty increases. Problem is: this format is almost the same during most of the serie; not the quests by themselves, because of course, the final goal is always the same, but the execution instead. In just one episode can be noticed how the jokes’ sequences are exactly the same most of the time:
1. Hime wants to get something to sleep better
2. “It’s time to go havoc in the castle” *QUEST STARTS!*
3. Maou-sama and crew discuss about attacking Yuusha, usually involving a rare, powerful item
4. “There’s no way someone can come across with that important item lolololol”
5. Hime comes across with that important item
6. “This might be useful, I don’t know how, but I’ll find out even if it kills me, because who needs to breath if I can get a good nap?” (Spoiler time: she got killed a couple of times)
7. Some gratuitous demons abuse in order to get the item to work (the funniest part, actually)
8. Hime gets what she wanted, demon in turn got hurt, and Maou-sama’s plan got ruined
9. “Suyaa~…” *QUEST COMPLETED!*
10. Rinse and Repeat

This is repeated two or three times per episode, and while initially it can be funny, doesn't take too long to get repetitive and dull, especially when she CONVENIENTLY gets the scene to work as she needs it, like coming across with the item needed the moment Demon Lord mentions it, finding the demons (or they automatically coming across with her) with the knowledge or feature just at the moment she requires it, or “accidentally” falling into secret places, making the whole scene feel unnatural and ruining the immersion.

At that point, the show would fall into the “average/mediocre comedy” category, where comedy starts to falling apart when it gets stuck in the same kind of joke without varying the context too much, and characters become more like walking tropes than actual characters… Luckily, the last five episodes (and some segments in the previous ones) were more successful at bringing better and more varied situations, exploiting pretty well the original concept of the serie, and even building some good character interactions. We learned a little bit more about Hime’s past and how demons were able to form bonds with her, even in that unorthodox situation, but still keeping her sassiness which is the main core in this serie humor. It’s sad this came a little bit late, but still saved the serie from falling intro repeatability and complete mediocrity.

Characters are pretty simple and straightforward. Aside from Princess Sya (not surprised if you didn’t remember her name) who already have been talked about; the rest of the cast are just there fulfilling their roles: Demon Lord as the clumsy yet reliable “evil” leader, Big Dog-san as the strict rule lover, Demon Cleric as the caring old man, Alraune as the kindhearted onee-san, and then the rest of demons being the tsukkomis.

Audiovisual aspects are good enough. The whole serie looks charming and colorful, having this Fairy Tale book aesthetic combined with RPG videogames elements, including HP and MP bars, text boxes and pop-up messages; some of these elements are actually part of the world itself, and characters are aware of them, creating some unique style. Character design is cute and fluffy, especially Hime’s; her big purple eyes are like a big abyss: once you look at them, you’re trapped and can’t escape, no matter what you do; cutest design I’ve seen in a while… and that’s why it’s even more shocking when you realize how is she in reality. Demons come in the more varied ways, from just a bunch of ice blocks, going through Teddy bears with little bat wings, to Alice in Wonderland’s Hatter with an arm full-made of scissors. Having this variety of designs it’s good to easily identify each demon… since they don’t really have any other memorable trait, actually. Music is… ok, I guess. Opening is cute, funny and catchy as hell, and that’s enough.

There’s not too much left to be said. Maoujou de Oyasumi can be a little surprise if you expected a typical moe comedy, instead you’ll get a badass princess going rampage and gratuitous demon abuse. Comedy is simple, a little bit repetitive and a lot of bokke-tsukkomi abuse, but it can be quite enjoyable especially when it starts to exploit better its potential and creating different comedic scenarios. Not bad comedy serie, but I wouldn’t recommend watching the whole show in a row, it can be kinda overwhelming; instead watching one chapter by week or day can keep the experience fresher.

Reviewer’s Rating: 6

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Aug 13, 2022

Mellize4

Not Recommended

Preliminary (11/12 eps)

Warning, this review is coming from a manga reader's perspective so there may be spoilers included but I'll try to refrain from spoiling them as much as possible. Again, read this review at your own risk.

Also, to those who may think the rating is quite harsh (due to it being a 4), this is purely my own opinion when comparing the manga and anime. Yes, the anime has done decently in adapting the manga. However, there are bunch of lapses that prevented me from enjoying the anime completely.

Now, onto the review.

For the most part, the anime has done quite well. It's quite ... enjoyable, especially to anime watchers, it's not repetitive like the manga, and the voices of each character not only suited them well but enhanced their characterization. However, here's a list of reasons that didn't quite sit well with me in the anime and felt that the anime felt lacking in comparison:

1. A lot of characters didn't make it into anime and those who have appeared so far didn't have a proper intro. While it's understandable that it's impossible to add it into a 12-episode series, they should have at least put more importance into introducing characters like Poseidon briefly. 3 minutes wouldn’t hurt to introduce him properly.

2. The anime turned Suya or rather, Sya less brutal and terrifying compared to her manga counterpart. Since the anime has bounced a lot on the stories from the manga, they deliberately chose ones that has made her seem cuter at best. Their focus of her being cute isn’t the focus of the manga, she’s a crazy sleep-obsessed “woman” who will stop at nothing to get what she wants.

3. I’ve mentioned Sya as a woman and not a girl. That’s because the manga has deliberately made her physically ambiguous of being neither a girl nor a woman but both at the same time as one of its major premises in the story, so it's very much inaccurate portrayal of her character. Not to mention, she refers to herself as an adult. Here: https://www.reddit.com/gallery/kourek

4. The lack of relationship development between other characters individually and instead having everyone appear together. This is one of the reasons that made me dislike the anime. Not only crucial tales and good comedy gag stories were skipped over, the steady progress of said relationship development look all too fast, superficial, and shallow to me in the anime as they made Sya warm up to the demons too easily when it took her 60+ chapters of doing so. They could have at least shown this more in episode 4-5 rather than immediately dump this idea on episode 9. At the same time, the portrayal of each character is day and night when you compare the manga version to their anime counterparts; each has their own personalities, issues, story arcs, etc. So it's disappointing to see them in the anime.

5. If you read the manga and I’m talking about Demon Cleric, I’m pretty sure you know what’s coming; the anime deliberately censored Demon Cleric in the worst way possible than I could imagine. All scenes about him in the manga were not only skipped over but his scenes in the anime were played by other characters instead or they were altered to the point of me seeing two different Demon Clerics in the anime and manga. Even the family picture of him being with Twilight, Great Red Siberian, and Twilight’s dad was taken out as well in episode 11. [Big spoiler!] And because his scenes were skipped over, altered, or played by other characters… they also censored the progress of his feelings for Sya; all those vague scenes of him in the anime being overprotective of her is not only because of that but that he’s also very jealous of them to the point of wanting to murder all the men who gets close to her, not even Twilight was safe from this. It doesn’t help the fact that he plays a major role in almost every story arc in the manga! Here's some of the evidences: https://www.reddit.com/r/MaoujouDeOyasumi/comments/ke9sx4/rip_demon_cleric_be_warned_spoilers/

[Edit: After my friends and I looked through the manga, we realized that Demon Cleric himself is a character critical and influential to a lot of the reasons or development behind the main story, the Demon Castle, the characters, etc. If Doga Kobo plans to keep on censoring him, a lot of the later story arcs will not make sense or will cause major plot holes.]

6. A lot of good stories didn’t make it into anime, all thanks to the Hero getting a popular va to voice him. All those scenes you see him in action in anime? Most of them are anime original or scenes that are modified from the manga to be longer and have something going on for him. I admit it that while I dislike this idea, his anime scenes make more sense than in the manga. Tho, I wouldn’t have mentioned this if it were not the fact that the anime production team only added more scenes of him because his va is a pretty popular one but not because they want to develop his character more compared to the manga. And because of this, good stories were skipped over in the process and even most of them have great plots of furthering the relationship development of Sya with other demons.

7. The anime turned a lot of characters into one dimensional characters; Hades and the Hero especially. Hades didn’t want to steal the throne from Twilight because he wanted it, there’s a deeper reason that has something to do with my reason #4. Also, Dawner the Hero may have a worst case of being terrible at directions and pretty much annoys the hell out of Sya but he isn’t an idiot who will take orders, from the Demon King of all people, like he did in episode 11. Here's an analysis between their manga and anime counterparts: https://www.reddit.com/r/MaoujouDeOyasumi/comments/l0el9m/differences_between_the_manga_and_anime_characters/

I said my piece. I hope the anime production team does a better job in season 2 if they plan on doing so. If not, I’m dropping this anime.

Reviewer’s Rating: 4

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