The Legendary Rebuilding of a World by a Realist Demon King


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In a rotted away castle, Ashta awoke as a Demon King.
With his ‘wisdom from a past life,’ he would rule over his lands as a thorough ‘realist.’

“Demon King, why are you attacking the level 1 Heroes?”
“Defeat them before they become stronger. That is called strategy.”

“Demon King, why are you sending fake money to the enemy country?”
“To bring chaos to their economy so they will self-destruct.”

“The werewolf troops have attacked. Should we use silver bullets?”
“Not bullets, shoot them with canons.”

And like that, Ashta ‘reformed’ the old tendencies.
He became a lord who was loved by the people and his subordinates and would go on to be called the most powerful Demon King in history.

Associated Names
One entry per line
Realist Maou ni yoru Seiiki naki Isekai Kaihaku
The Legend of Rebuilding World by Realist Demon King
Related Series
The Simple Job of Only Perishing to the Hero (3)
Dungeon Defense (2)
Genjitsushugi Yuusha no Oukoku Saikenki (1)
Maou-sama no Machizukuri! ~Saikyou no Danjon wa Kindai Toshi~ (1)
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Latest Release

Date Group Release
12/10/19 Tiger Translations c60
12/03/19 Tiger Translations c59
11/27/19 Tiger Translations c58
11/27/19 Tiger Translations c57
11/21/19 Tiger Translations c57
11/13/19 Tiger Translations c56
11/01/19 Tiger Translations c55
10/27/19 Tiger Translations c54
10/24/19 Tiger Translations c53
10/15/19 Tiger Translations c52
10/09/19 Tiger Translations c51
10/01/19 Tiger Translations c50
10/01/19 Tiger Translations c55
09/26/19 Tiger Translations c49
09/17/19 Tiger Translations c48
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16 Reviews sorted by

AndyDarren rated it
February 10, 2019
Status: c5
I wouldn't usually give a rating, especially not such a low one, so early in but at this point I think I've seen enough.

The guy keeps coming up with "innovative strategies" that any rpg noob with half a brain can come up with and recieves cringingly overwhelming praise for it every time. You mean to tell me that of all the 71 other demon kings that have been existing before this guy that not one of them have thought of killing off any of the 72 heroes before they grow... more>> up and gain power? And why in God's name would every Demon king be tasked with keeping in their castle a weapon that the hero specifically can use to gain a huge advantage against them? Probably so the MC can come up with the BRILLIANT idea of getting rid of it beforehand, you know, cuz unlike all the other "stupid" demon kings he's a realist and he has no problem reminding us of that at least twice every chapter.

Maybe it wouldn't have been so bad if the dunge-*ahem*, Demon king castle system at least was somewhat interesting, however to summon monsters all he does is literally throw ingredients into an actual pot and something pops out, also apparently using the same ingredients doesn't give the same monster. This is literally a gacha that's been unsuccessfully reskinned.

Pretty sure it won't be long before this novel flops into a burning pile of MC being glorified by all his companions for coming up with subpar and overused ideas. <<less
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hawlol rated it
February 20, 2019
Status: c12
Like reading a manga... without any pictures.

Chapters are short, descriptions are minimal to non existant. There is pratically no worldbuilding. Battles are lackluster and done in one or two sentences, and most of the written content are meaningless generic dialogues between the characters.

Aside from the dialogue almost everything else is 'tell but don't show'.

This feels void, empty and lackluster. A summary of an idea that could be good if developed properly, but useless as it is right now.
18 Likes · Like Permalink | Report
entity rated it
May 24, 2019
Status: c29
Okay, here I go again explaining how the story is supposed to be read for my second time. So here are the things I consider this story to have...

First of all the story is about a history researcher (probably) and realist who is reincarnated as a demon king (lord or whatever) who was tasked to unite the continent by the goddess, and the character is a serious and, probably, former antissocial person who knows how to handle people in general (since whenever Eve says that she wants to do xxx... more>> with him he acts more like "Okay, I see. But there's more important stuff right now, so no")

Second only the demon king MC and Jeanne d'Arc are confirmed reincarnated people from our world as of the chapter 29 of the translator's site, meaning that there might be other reincarnators and even transmigrated people in that world, but none of the other demon kings are said to be reincarnated

Third the common sense of us readers can only be applied to the MC, since the world where the story's passes is a world inspired in the late Middle Age with magic and JRPG themes so the common sense is bound to be different in there

Now let's criticize some people here...

And that person is Andydarren, no offenses but you literally disregarded everything I just said. Starting with the common sense stuff, you said that the MC is only applying common sense, and that is half true because his common sense is the same as ours, but the same can't be applied to Eve, Jeanne, Hanzo (I think this is the name of the MC's general) and the other demon kings, since all of them are from that world, Jeanne is from the late Middle Ages of our world, and Hanzo is likely to be from the sengoku jidai era of our world (probably)

The weapon that is the special last boss killing weapon had it's use explained by Eve, it's the symbol of power and authority of the demon kings, and using a irl example the weapons are the same as the holy artifacts in Vatican City, should the Catholic Church lose them they lose their authority, and also I don't think the other demon kings have a living walking database with them.

Then there's the heroes problem, and now I ask you a question how many leaders with almost unlimited powers thought that they were untouchable? Answer: All of them. So in basic logic why would a demon lord bother themselves to kill a hero as early as possible if they think they are invincible to the point of considering that a hero is not a threat to them?

So basically MC actions up to this point, are brilliant to the people in that world, because in the context of that world his ideas are innovative and out of the box for all the characters until now

And for everyone else, I ask you all tell me a good fantasy story were we knew everything about every character in that story, because as far as I know even GoT characters started with a hidden depth, but we only saw the surface and as the story progressed every important character in there had their depth revealed to the readers and watchers <<less
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jiisama rated it
February 14, 2019
Status: c7
The backstory for the MC is that he has no solid knowledge of the past, and came from a world that isn't Earth. Then suddenly the MC remembered he used to research Japan so now here is a bunch of knowledge obtained from Japanese games and earth's history. The author wanted to fool us that this would not be the generic isekai. Instead of pretending the MC was born and raised in not-Japan, just say he was a former Japanese person as it'd be more believable, given the amount of... more>> knowledge he knows about Japan.

This story is shaping up to be your generic copy paste. Japanese MC who is meek against women. Maid. Gachas. OP levels of luck. We'll see what happens as the translation continues but it seems like a knock off of "How a Realist Hero Rebuilt the Kingdom", except the author is trying to have this MC be everything the opposite of Realist Hero's MC (demon, being deceptive and cruel, physically strong, win without uniting nations, annihilating the enemy, etc.). I say knock off because this WN came out in 2018 and Realist Hero came out in 2014. <<less
10 Likes · Like Permalink | Report
September 11, 2019
Status: --
Ok let me say something, but not about the novel. But about the people who "Review" this novel despite knowing that this is the Web Novel (not final product) and not Light Novel (final product).

There is something that the reader ignore is

1. MC is reincarnated from different world.

... more>> 2. The other World was not real world like ours, it has it own life style and common sense.

Some reader complaining about the MC solve problem with simple way, which is too normal for us as reader (in our modern world).

But they didn't even bother to think that the world that MC currently live is not our world. That world have it's own set-up, not to mention it was fantasy with Magic and Monster. So it sure has different common sense and etiquette, and also have their own style to solve problem. But MC was different, he comes from modern society and also as researchers.

Let put it simple example from our real world.

Western and eastern or European and Asian has their own common sense to do something.

Christians and Muslim has their own believe when did something.

Programmer and farmer has their own language to make something.

What I am trying to say is, what you may think is simple, doesn't mean the other people think it was simple as you think.

And Also, theg didn't even read it till the latest chapter yet but act like they already read it till the end of chapter.

currently the latest chapter that has been translated is around 47 chapters. And the raw is 139 Chapters.

But the people who gave review is only read below chapter 20. And again they act like they already read all chapters..

i mean where your common sense? Lol

Well I will give review about this novel, when the translated chapter has catch up with the raw.

And not like some biased people <<less
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Easykiln rated it
June 30, 2019
Status: c7
Shallow. The protagonist is supposedly a genius character, but the author isn't clever enough to write one. It's just constant ego masturbation over simple strategies.
7 Likes · Like Permalink | Report
sgrey rated it
May 11, 2019
Status: c25
It's not particularly bad, but quite shallow. Few things are explained properly, characters are not that developed and personalities are not great either. We already fell into common harem tropes. In addition, the "realism" is pathetic tbh. The things that are making out to be smart are not that smart in reality, but more of a common sense and anyone can come up with them. Overall it feels cartoonish and underdeveloped. The concept is good, so there is a faint hope that the author might get better over time.
4 Likes · Like Permalink | Report
February 10, 2019
Status: c5
In truth I began reading this only because I saw the "Adapted to Manga" tag, as I held intital expectations that would mean the story would not be utter shit, but then again upon further contemplation I realized I have seen some completely sh*t mangas. So I don't even know why I read this, and furthermore I can't find any english translations to ascertain the quality of the manga.

Anyway onwards to reading the novel. My biggest impression of what I saw is that it was very short. With each chapter... more>> being about 1-2 pages of text, I 100% recommend to let the chapters stack up to at least 20 before beginning reading. <<less
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bidoblob rated it
October 8, 2019
Status: --
Started reading the manga and thought I was reading a slightly changed version of Dungeon Defense, but after a while I realised that it was just a failure of a ripoff of it.

It said he was realistic but, rather, everyone else was stupid in this, as opposed to the original's protagonist, Dantalian who is literally fighting against everyone and only has himself and his own wit to rely on (and some knowledge of future events).

I read the manga and was very disappointed since its just a ripoff off dungeon defence... more>> down to very many small details, like being the weakest of that many demon lords, getting a demon maid, being a "realist" except that the ripoff failed.

Because Dantalian is smart without everyone else being stupid, doesn't rely on getting his hands on good and reliable subordinates for no reason and doesn't have any real personal fighting power. No I didn't read the novel and won't bother to since I know I'll be disappointed. Go read Dungeon Defense instead. It's great. Though it did get dropped, so don't, if you dislike that. <<less
3 Likes · Like Permalink | Report
Kurobito rated it
May 5, 2019
Status: c24
The story has so much potential, just that it lacks of depth right now. All in all, it does not have much details but it is very concise.

Looking forward for the update of this one.
3 Likes · Like Permalink | Report
Ithariel rated it
February 26, 2019
Status: c17
It's okay, not great, but okay.

As others have said, the chapters are a bit short and the fights aren't really high in tension, but it's nice.

The biggest critique I have is definitely the "great nippon steal" and similar.
3 Likes · Like Permalink | Report
EmEm rated it
February 23, 2019
Status: c14
Yes, chapters are short but they aren't filled with unnecessary stuff, just the most important aspects of the story, no dragging one conversation across 10 chapters.

If course I would like longer chapters or more updates, not just because they are short but because I like reading this...

Someone might complain that the MC isn't a genius but nowhere is stated that he is, it's just that the enemies are just following the same steps, without thinking about anything crytically
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Am I Un-Dead Yet
Am I Un-Dead Yet rated it
February 13, 2019
Status: c6
Casual Machiavellian know it all, with a smart loyal maid..... there may be some wish fulfillment self projection on the part of the author.

Chapters are extremely short so it’s a slow take off, but TL is pretty smooth. As other review has said, maybe let some backlog build up to you can keep a flow going.
3 Likes · Like Permalink | Report
pipen53 rated it
February 7, 2019
Status: c3
As only 3 chapters have been released it is not possible to do anything but give the shallowest of reviews; so I wont even try. I love kingdom building and hopefully this can add to the small pool of kindom building novels. I do think though that the translators should have done an initial mass release to garner attention and traction.
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Lanboy rated it
July 30, 2019
Status: c39
note: if you want a story which has minimalist writing and jarring flaws in a story about the power of "realism" look no further.

The premise is very promising and shows where it could've shined if it wasn't for two things

1.) Reincarnation/ transmigration

... more>> 2.) Ideology choice

With reincarnation stories, they are typically caught in a difficult balancing act between pacing and exposition which eventually cripples the story's ability to entice the reader to continue reading. What this story suffers from is the lack of "realism" in the story, the main character is somehow in the favor if god, a battle manic's blood lust (never use a thirst for random blood as a motive unless the character is insane), and finally quite literally walking exposition.

What I mean by ideology choice is the conflicted nature of the story that switches between dark, very well constructed scenes and fluffy, unnatural exposition scenes that overall make the pacing somewhat erratic. Making it difficult for the author to convey the story / world he wanted to show.

Despite these flaws I mentioned, the author had a very good idea of the world that he wanted to create and the ideas are quite good. If the story was remade with a more careful approach to these issues then this story would become quite good. <<less
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kevinmul rated it
March 2, 2019
Status: c19
This really remind me with "The realist hero rebuild the kingdom".

But in lite version...

The story is straight to the point, no unecessary story.

But I remember... this is a web novel, written by author who seeks ideas and feedback from internet.

And giving it around 30 chapters, I believe the plot density will increase.

And I always appreciate small chapter to let out some steam out of my head.
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