Dungeon Battle Royale ~ Since I Became a Demon King, I Will Aim for World Domination ~


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One day every human on the world suddenly receives a mail claiming to enact the World Salvation Project. Half in doubt Kurosaki Shion, a diligent university student and loner, follows the mail’s instructions, becoming one of a million Demon Kings governing his very own Domain in the new world.

This is a post-apocalyptic story containing many fantasy elements. It is a somewhat dark tale following Shion as he grows while aiming for the unification of the all too sudden new world. It has many game-elements bolstered by strategical thinking while at the same time providing funny moments and romantic encounters.

Associated Names
One entry per line
Dungeon Battle Royale ~ Maou ni Natta node Sekai Touitsu wo Mezaishimasu ~
Related Series
Dungeon Defense (2)
Dungeon Hunter (2)
Maou-sama no Machizukuri! ~Saikyou no Danjon wa Kindai Toshi~ (2)
Rose Princess of Hellrage: Although I got Killed for Political Reasons, I got Revived as the Strongest Undead (1)
Only Sense Online (LN) (1)
Only Sense Online – The Silver Muse (1)
Recommendation Lists
  1. novels with mc as dungeon affiliated person or sto...
  2. My list of novels
  3. novos
  4. My collection#2
  5. More Reads I enjoyed~

Latest Release

Date Group Release
05/11/21 Infinite Novel... c134-135
05/04/21 Infinite Novel... c132-133
04/27/21 Infinite Novel... c130 part2-131
04/20/21 Infinite Novel... c129-130 part1
04/13/21 Infinite Novel... c127-128
04/06/21 Infinite Novel... c125-126
03/30/21 Infinite Novel... c123-124
03/23/21 Infinite Novel... c121-122
03/16/21 Infinite Novel... c119 part2-120
03/09/21 Infinite Novel... c118-119 part1
03/02/21 Infinite Novel... c116-117
02/23/21 Infinite Novel... c114-115
02/16/21 Infinite Novel... c112-113
02/09/21 Infinite Novel... c110 part2 + c111
02/02/21 Infinite Novel... c109-110
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12 Reviews

Jan 22, 2020
Status: c250
The MC is reasonable and inteligent enough but not to the point of unrealistic, he is the type that focus more on analysis and planing ahead (probably impact of being economic major undergraduate).

What I really like is that a lot of MC decisions seem good with the amount of information he had at that time then some turn out to be brilliant but some also turn out to be mistake when he got more information.

This novel also show that many conclusions that MC reach, a lot of other people also... more>> arrive at the same conclusion (unlike many novel that seem to treats what MC thinking as something unique and totally innoventive even though it's something that's really simple thus making other character looks dumb)

Other characters also have distinct personality, not just some card board (well the important one anyway lol) enough that you would remember them despite the huge amout of characters.

The setting is interesting and seem fresh enough even though the premise is kind of convolute but no more than other fantasy setting in japanese (like getting send to another world after a car crash, stabbed, etc.) <<less
24 Likes · Like Permalink | Report
Jul 01, 2020
Status: c52
At least 90% of the novel are system expositions and internal monologues of the MC about said system and it's skills/attributes, where he ponders about all the implications of each option, performs a bunch of number crunching and simulate the consequences.

It gets a little less worse about chap 40+, but it's still bothersome and I got myself skipping a lot of the info dump, specially because they didn't matter in the end. The rest of the story is mostly grinding/farming ppl that invade his dungeon in a boring tell don't... more>> show manner.

The MC lacks personality and is quite boring. We can't sympathise with him since he's either killing tons of 'innocent' ppl invading his dungeon, or treating his minions as expendable pawns even though they have intelligence but no free will.

I'd rather be reading Dungeon Defense, Maou-sama no Machizukuri, or a bunch of other dungeon novels at royalroad that explore this theme far better and with an actual story. <<less
8 Likes · Like Permalink | Report
Oct 02, 2020
Status: c58
Try another novel. Unless you only want clichés.

... more>>

About MC: He is just another teenager with "I'm Tough person, you know" mentality. He is one of the author boasted "smart and manipulative" MC. In reality, he is just a mediocre and possible a mentally affected teenager who needs experts counselling. Without plot armors, he would have died at the beginning itself.

His marvelous manipulations like - farming dungeon, 6 hrs time limit concept, giving gifts -stronger weapons - are just s*upid plot hole and armors.

It was given that those supposed demon lords already used internet to share info during probation period, why come no human found it? - No explanation. If demon lords still uses internet - Why no else made any post and only MC posts it? - Left hanging. What he does (giving of weapons) affected another DL, why the reverse hadn't happen - Again another Plot Armor. One DL literally cried to Hero party that they should show him mercy as he is also a fellow citizen - yet this CRUCIAL info. Never came out, and left in darkness - What a Plot Armor!.

No one doubted why 6hrs time limit only applicable to MC dungeon! - Or by what miracle the study conducted exactly in his dungeon out of a lot?! And Why not this info was cross checked with dungeon at other areas?! - Again plot Armor!!!!!!

Chapters were filled with so much blah, blah explanation - which were literally useless. At time I thought as google-chan entering the scene, it might get interesting but alas it was just another waste.

Especially information gathering and manipulation using apps makes no sense if you apply your common sense as other side is the one who has more resources to collect, organize and access these information - ALL OVER WORLD!, once again, note here, ALL OVER THE WORLD. They are people and governments who governed countries in modern world not novice pumpkins. But how plot treats them - is utterly ridiculous.

Bottom line :- MC- Worse. World Setting - Worst. Plot growth - Blah blah. Side characters - just fillers and noises.

Its a crap. DONT READ IT.


I don't think it worth the time spend. DO SKIP IT. <<less
6 Likes · Like Permalink | Report
Apr 08, 2020
Status: side story 1
This is the best dungeon management I've ever read because only half of the story is about dungeon management. The other half is about imageboard shilling strategies.
6 Likes · Like Permalink | Report
Dec 18, 2019
Status: c20
Ok not bad.

I love the fact the MC is not a genius or anything.

The focus is on the system, has the MC as not spoke anything since chapter 2.

I can see that changes in the future.

Won't take long to read. Worth a try
6 Likes · Like Permalink | Report
Dec 02, 2020
Status: c75
It is good and much better than many other japanese isekais. But this is a dungeon core story and it kind of is a defend the objective and manipulate the attackers kind of game. Anyway I'll drop this. Nothing wrong with this story, funny with a clever MC, but there isn't that much different, nothing there which hasn't been seen before. Though the dungeon elements still combine in a nice way not making this boring. Also the translation is going to take a while. Translation is also good btw. So... more>> read it, if you are searching for a nice story, while not the best, it still is pretty good.

Now my personal reason for quitting, I just kind of got bored. Sure it has a nice progression, the characters aren't 1-Dimensional and there aren't any real illogicalities. But considering this hasn't been fully translated and I would have to wait for a long time for this to finish. I already know, that when the translation is finished, I won't like the novel anymore, simply because it took so long. There is the good kind of waiting and there is the boring one. I waited for a few chapters to stock up, before I decided to try to read up the stockpile. But I don't want to do this a dozen times, waiting just takes the fun out of reading this for me, so i'll be a quitter. <<less
4 Likes · Like Permalink | Report
Oct 06, 2020
Status: c96
Good read, worth searching.

While it has nothing extraordinary about it, there's nothing unnecessarily displeasing either.

Most of other stories has this common issue, they purposely make MC very advantageous only to suffer brain damage at the most convenient time for the author, so that probably, conserve writing material but both f*cking up the story's pace and reasoning. This story however, doesn't have uselessly advantageous MC and approach such issue in a straightforward manner.

It approach it just by blatantly wrote lots of parts from a single chapters/title within battle chapters, which I... more>> still hate for the sheer number of it *can reach over 20*. Fortunately, the author knows what to give to the readers, that is to give them some sort of result or conclusion thus keeping me within the story despite the lots of parts.

Remember when some stories had a bunch of fighting chapters and it ends with nobody died or the baddies just s*upidly flee? then asked, why am I reading this the whole time? This story, well... rest assure, it doesn't do that, just this one time MC failed to slaughter but 2 of the entire invader, but don't let that discourage you... go ahead and read, it's not bad. <<less
4 Likes · Like Permalink | Report
Dec 12, 2020
Status: c126
It's really good, probably one of the best dungeon defender novels out there.

BUT it's definitely not for everyone, if you dislike it you'll hate it. The text is wordy and there is a lot of discussion about mid-maxing and theory crafting.

The upside of this is you're constantly going "oh what could I do here" and planning out your own moves. Different minions and attack patterns, lots of in depth about powers and abilities.

Not for everyone but if your into it, it can't be beat.
3 Likes · Like Permalink | Report
Jun 28, 2020
Status: c279
Alongside lazy dungeon master, this imho is the best dungeon master LN.

The MC is bound by the same rules, same system as the other demon king and thus start in the same starting line as his adversaries. He's not OP at all which I really like. Other than the basic, most of the world system and rules is unknown to everyone. It's like, the character are playing a new game with no tutorial and minimal explanation, let alone faqs (though the author sometimes explain the hidden mechanic of the... more>> world to the reader through end of chapter notes)

The interesting point about this LN is perhaps the setting which enable the reader to guess the endgame of the story. Spoiler just in case

The story takes place in our current world. It's not an isekai. Shion, the MC, is a former Japanese university student who is chosen to be one of the milion demon king. Yes, the demon kings include foreigner from all around the world though until ch 54, he is just on the verge of conquering the city he lived in. From here we know that afterwards the story will progress on national scale and cross into international stage. I wonder what the demon king from north korea going to be...


The pacing and quality of the story is decent, but the length of a chapter is a bit short. If you thought that the novel has progressed so far because of its 270+ chapter then you will be dissapointed.

This is a spoiler far from the current translation

The genre is shifting further from pure dungeon management after 100+ chapter and focused more on territory expansion and recruitment of promising personel. Most of the major battle in later story consisted of Army scale battle with both sides often having similar number or Shion's in disadvantegous position. If you have played rts games like total war series in hard mode, the story will progress to something like that. Including managing his conqured territory and forging alliance with other demon kings.

3 Likes · Like Permalink | Report
Feb 02, 2021
Status: --
An excellent novel for me. Good thing I found it cause it is a worth reading novel. Especially if you are like me whk is tired of reading the kr novels with dungeons and modern times genres. Of course this is different from the kr novel cause it is jp novel but still I cant help comparing them.

It entertain me, so 5 stars for this novel.
2 Likes · Like Permalink | Report
Jun 02, 2020
Status: c47
One of the best dungeon defense novels that I've read. The MC is not an edgelord, but he always does his analysis of what will gonna happen, planning, etc. The author gave solid enough reason for the MC to adapt quickly (which is to erase their emotions as a human and the memory of their relatives.). All in all, its a great read.
2 Likes · Like Permalink | Report
Jun 19, 2020
Status: --
Definitely top tier when it comes to any dungeon defense novels. The power system for the MC was extremely well thought out. The dungeon masters can evolve from being human into any number of mythical beasts all of which have special conditions which need to be met before one can take any specified route. I'm excited to see more of what this novel turns into.
1 Likes · Like Permalink | Report
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