Isekai Maou to Shoukan Shoujo Dorei Majutsu


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In regards to the MMORPG Cross Reverie, Sakamoto Takuma boasted an overwhelming strength that was enough for him to be called the Demon King by the other players. One day, he gets summoned to another world with his appearance in the game. There, there are two people that insist “I am the real summon master.” Takuma gets slave-turning magic used for summoned beasts cast on him by the girls –

However, the peculiar ability {Magic Reflection} was invoked! The ones that were turned to slaves were the girls!

Takuma was bewildered. He’s the strongest magician but, he doesn’t have any social skills. Panicking, the first words that came out were the ones that he used inside the game role playing the Demon King!? “I’m amazing you say? Of course I am. I am Diablo……The one feared as the Demon King!”

This is the story the Demon King (acting) that would soon inspire the world and his other world adventure that he plunges through with his absolute strength, raise the curtain!

Associated Names
One entry per line
How NOT to Summon a Demon Lord
The King of Darkness Another World Story
The Other World Demon King and the Summoning Girl’s Slave Magic
Related Series
Altina the Sword Princess (1)
Madan no Ou to Vanadis (1)
Nejimaki Seirei Senki – Tenkyou no Alderamin (1)
Rakuin no Monshou (1)
Sevens (1)
Shinwa Densetsu no Eiyuu no Isekaitan (1)

Latest Release

Date Group Release
06/08/18 Isekai Soul-Cyborg... v8 afterword
06/08/18 Isekai Soul-Cyborg... v8 epilogue
06/08/18 Isekai Soul-Cyborg... v8 interlude 2
06/08/18 Isekai Soul-Cyborg... v8c5
06/01/18 Isekai Soul-Cyborg... v8c4 part1-7
06/01/18 Isekai Soul-Cyborg... v8c3 part4-10
05/17/18 Isekai Soul-Cyborg... v8c3 part1-3
05/17/18 Isekai Soul-Cyborg... v8 interlude 1
05/17/18 Isekai Soul-Cyborg... v8c2 part8-10
05/10/18 Isekai Soul-Cyborg... v8c2 part1-7
05/05/18 Isekai Soul-Cyborg... v8c1 part4
05/04/18 Isekai Soul-Cyborg... v8c1 part3
05/03/18 Isekai Soul-Cyborg... v8c1 part2
05/01/18 Isekai Soul-Cyborg... v8c1 part1
05/01/18 Isekai Soul-Cyborg... v8 prologue
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34 Reviews sorted by

keklel rated it
July 20, 2016
Status: v3 prologue
Having read the novel as well as the reviews I think a 2 star rating is justified.

MC's actions are highly indicative of a typical cliched shounen protag:

- He lets people who are a threat to him (i.e people who want to kill him and those close to him) leave without even arresting them or anything. Example: elf guy, kidnappers, feudal lord.

- Falling for obvious tricks like agreeing to the enemy being alone with his slave even though he knew the enemy was up to no good and yet... more>> did not prepare at all. Then later on when his slave acted strangely he did not suspect that it was a trick caused the enemy placing a spell on the slave earlier and just lets her go to the enemy camp alone without suspecting anything at all.

- MC falls for so many traps and schemes that it's a wonder how he didn't die or get captured already. He never plans out any of his fights. Never suspects his enemies might be up to something even though past experience suggests otherwise.

- Every time he gets ambushed, he wins by luck or just OP powers. He beat the feudal lord by pure luck because by coincidence he learned how to break the barrier earlier on.

- He trusted Alicia even though he had no idea who Alicia was nor her motives. Allowing her to be alone with his slaves was stupid and nothing but poor judgment.

- When is he going to find his old dungeon? It was mentioned in the first chapter but it's been 2 volumes and he still hasn't made a move towards it yet. Also he mentions that all his items are in the bank, yet he doesn't try to find the bank even though he needs his items.

- He allows his slaves to go out on quests alone without any kind of protection when they've been attacked and kidnapped multiple times already. He has no reason to do this since he could just ask the guild head for money instead of having his slaves earn money by going on quests.

- Multiple times he's been ambushed due to not having any detection abilities, yet he hasn't put any thought into acquiring any detection abilities.

- When sleeping he takes off all his gear and does not lock the doors apparently so enemies can just come in and attack him while he's defenseless without his gear on. This actually happened. No indication he learned any lessons from it.

- The MC's pretending to a demon king is easily seen-through by every character in the story yet he apparently doesn't notice this even though it should be obvious to him.

- He repeatedly mentions that he needs MP potions yet makes little effort to acquire any. He asks the guild head to find some for him, she obviously fails. I guess that's the end of that.

- Total lack of exploration and curiosity. He notices magical items (such as the flute) which did not exist in the original game but does not attempt to find out anything about said items. He is surprised by the use of ritual magics in the world, which were not able to be used in the game, but apparently does not investigate it any further even though they were apparently much more powerful than the chant magics used in the game. He did not try to learn anything about the hydra which appeared which he said that did not exist in the original game. The list goes on. Every time MC encounters something new that could be potentially important he just goes "meh" and ignores it only for it to blow up in his face later on (the flute being an excellent example).

- Apparently the only motivation driving the MC is the girls who summoned him telling him to go do this or do that:

Random girl: "hey MC go defeat the demon king for me"
MC: "okay that will be my life's goal from now on"

This pretty much sums up the entire story.

- The best part is none of this was necessary. Since he had the slave collars and can order the slaves to do whatever he wants he could have easily just ordered them to tell him everything they know about the world and help him go find his dungeon or whatever. Instead he gets dragged around by them doing quests which only get them into more trouble and the best part is he didn't even know who these girls are until random coincidences happen which reveal their backgrounds to him.

Pretty much one of the dumbest MCs around. Better to read a reincarnation novel than this. <<less
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Elyas rated it
June 12, 2016
Status: --
The story is okay but I absolutely hate MCs who would rather let their friends/themselves be in lethal danger than kill people or even just maim them... I know this isn't supposed to be a super serious novel but its so annoying when the MC just stands there doing nothing because he's afraid of killing the bad guys. Also letting them go free after he's defeated them and not even getting them arrested or something.
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rissira rated it
June 30, 2016
Status: --
This novel is so cringy that my stomach hurts whenever the MC makes stupid decisions, like letting people, that could have killed him, live.. Its like others said, a downgraded version of overlord.. But unlike overlord, the MC here is acting as a demon lord, where as the MC in overlord is living as one.. See the diffrence? The story had promise but having a spineless and stupid protagonist killed it for me.. The MC is a dense cliche wont kill type of MC.. Im ok with letting the bad... more>> guy live if there was a redeeming quality to him or if killing him would cause a major problem in the society.. The MC here would rather be bullied than shut them up.. Seriously, If you have the power of a demon lord then fukin use it! <<less
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hlubkoj2020 rated it
February 8, 2016
Status: --
Let’s make it short here... MC is sh*t and a pu**y.
Have power, but won’t use and let others have their way with him.
P.S it’s my opinion and how I feel so if you like a spineless MC... go ahead!
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BapukBgt rated it
August 6, 2016
Status: v3
OP MC, check. MC Strong From The Start, check. Harem, check. Busty, check. Flat Chest, check. Comedy, huge check.

This novel is hillarious, the story about OP MC who pretend being a demon king, with his fake ruthless speech. Typical tsundere male. The writing is solid and easy to understand. Therefore, a 5 star review is just right
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joshan rated it
July 4, 2016
Status: v2c3
Guy is overly cautious and wimpy but not invincible. Since he is being compared to overlord:

1-He's not as strong (uses a few elemental spells and hes out of mana)
2-Doesn't have a f*cking army (a cat and a pair of boobs are not an army)
3-Doesn't have a ton of items he can use as resources (cant access his bank so most items gone)
4-He's very poor (women has to work xd)
5-Demon kings die here (if the world thinks hes a threat...... more>> hes a goner)

His demon king act is the only sh*t that gives him confidence otherwise he would just hide and get exploited. Not killing people ? he knows he will have no choice at some point. he protects his allies and take hits for them (idk where he runs instead) <<less
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Parth37955 rated it
April 6, 2016
Status: --
This is one is a bit odd. Otaku who was know as the "Demon King" of a game gets summoned to a world similar to game. However instead of becoming the familar of the two people who summon him, the spell rebounds and instead makes them his familars. It's a pretty funny novel. MC tries to put on a "I'm a Demon King, Do not Cross" kind of persona, while internally he's freaking out. The two girls that summoned him had different purposes, but MC pretty much wants to do... more>> what he wants. It has a few ecchi moments. I recommend giving it a try. <<less
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Ligoya rated it
July 16, 2016
Status: v3 Prologue
The background story are too shallow, this make the world small and uninteresting. The pacing are just incredibly slow that even the author need to say an established fact many time in every chapter to the reader as if all reader that read his work are f**king senile.
The MC action are lame and unproductive, it's said that the MC are a hikki and an otaku, but that doesn't mean you must not test all your ability and item, in the first place the author not giving us more detail... more>> about what state he's in when the MC get summoned to that world. And when the MC fight with the demon, no sh*t you are winning, it's because the author said so, less thinking -> BAM -> MC win.

This series is just seinen wannabe while holding on to harem shounen thinking.

They say that a character intelligent based on the author, that's right, it's sh*t. About why I give this 2 instead of 1 is that, at least they have an illustration.

v2c3, finally a fight that can be called decent, now I can properly justified my 2 star rating <<less
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appreciativeleecher rated it
October 2, 2017
Status: v7
It saddens me to see all these negative reviews, so I'll have to give this a 5 star to compensate.

Is this the deepest series? Nope. Are the villains far too often the mustache twirling one-dimensional evil types? Yup. Does the MC have his flaws? Of course! Is it a fun read with a hilariously socially handicapped MC who is op and always does his best for people and his girls while looking like an absolute beast? Oh heck yeah :D

Those who should read: Those that like cute girls... more>> with a little bit of ecchi (occasionally that leaks into some fairly deep ecchi, bust it's mostly lighter), those that like an MC that is a good person that treats people well, those that like a decently smart overpowered MC that always saves everyone even though things look bleak from time to time.

Those that shouldn't read: Those that are looking for something dark, those that want an MC that kills everyone, those that want a perverted MC, those that are looking for something a little more tragic or has a lot of struggle and near death situations, those that want him having lots of s*x with lots of girls (Just ecchi, no s*x).

As stated above, this guy is a normal Japanese neet that got summoned as his incredibly powerful character into the world of the game that has now become an actual fantasy world. The world building isn't TOO detailed, but it's solid enough to get the job done. The characters are fun, and I especially like the main character. His demon king role play is the only way he can cover his social anxiety, and the people that are close to him quickly learn to translate what comes off as a huge tsundere act. It's especially cool, though, when he's confronting the baddies! He likes girls, but in this case his social anxiety freezes him in place. That's actually ok or this novel would turn into something else entirely, especially since the author figures out various situations to have things happen, either led by the girls, by getting drunk on the part of the MC or some kind of situation that requires him to take action to a degree or something of that nature. (It's still just ecchi instead of full blown action, which is perfectly fine by me). Each girl he meets has some kind of problem that she's been grappling with that he takes on the burden to help them solve, which is usually done novel by novel. This leads quickly to a very high amount of affection points on their part for their tsundere protector that repeatedly puts his life on the line for them. Cute!

There's a hopefully decent summary for you about this novel. Don't go in expecting anything that it's not, and just enjoy it for what it is. I always have a lot of fun with it.

Just as an fyi, I'm not the type to the enjoy those very slice of lifey isekai stories unless they have some kind of big hook to them. The Demon King roleplay is what gives this one the hook, as well as the good guys winning and the MC being a good guy in general. The focus is also on the light but reasonable plot rather than random Slice of Life, so it's kept me interested.

Update as of Volume 7:

Still a very enjoyable series for what it is. General story flow spoilers.

Things are starting to pick up more, MC gets even more OP with an apparently upcoming training arc. Him and his companions also got a big boost when they found his personal dungeon from the game. The demon king forces are on the move and various demon kings are trying to revive. War is coming! (Probably)

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Nietzsche-Kun rated it
April 8, 2016
Status: --
Had good potential at the start but if you like spineless MC this is the novel perfect for you
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Razordor rated it
August 31, 2017
Status: v4c4 part2
I think most reviews are getting the wrong idea about why the main character does what he does. In the novel it's clearly stated that he's a pacifist so to him killing is clearly a taboo, but so far in the story killing has never truly been required. The MC is not naive enough to not kill when its required, but do you really need a protagonist that ruthlessly kills because he can? Haven't you readers ever heard of morals? Have you ever killed anyone? We are talking about someone... more>> from the modern world who practically has no interaction with other people. And you expect him to kill? This story portrays a normal person MUCH better than those other novels.


Clearly none of you have even gotten to the demon lord arc where he really would have killed a friend (read to find out who) if not for some lucky circumstances.


I won't deny that the MC is nearly spineless though since there were numerous incidents that he could have taken advantage of, but that's what makes his character so great. I give this novel 5/5 stars not just because it's unique, but also because the novel goes further in depth in the world and at the same time most events are localized giving a sense that there is more out there to be explored, which will be explored.

The only thing I will subtract a star from this novel for is the cliche ecchi elements. And that is about it. <<less
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ddadain rated it
December 16, 2015
Status: --
Not a novel I would recommend to people to read as it is, at best, a mediocre work in the fantasy summoning game genre with a dash of ecchi and harem to try to spice up its dull setting, and a smidgen of comedy and adventure just for the lulz.

I’m also surprised by the “Small Breasts” tag as the elf has at least 40Gs (I estimate...). The other girl does have a SERIOUS pettanko (AAAA negatives). At most, both would cancel each other out (LOL).

Jokes aside, both female “heroines”... more>> are exasperating. The interactions quickly become repetitive, droning out otaku tropes of enslavement of “desirable” females and sudden windfall of “strength”, which basically means the target audience of this novel is self-appeasing delusional otakus.

The plot is generic and seems to feel like a watered down version of Overlord without its depiction of the social problem of xenophobia by many Japanese and the need for good governance, etc. Basically, it is meaningless.

2 out 5 <<less
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mllhild rated it
May 7, 2018
Status: v8c1 part4
I really recommend it if you want to read a nice funny action ecchi story with good characters. Especially if you can laugh at ecchi developments or unexpected traits of characters!


  • good translation and already a lot of strory translated
  • character driven plot with good character development in a realistic pace
  • MC is strong but far from an OP God like mage like Ainz and undefeatable. Also he is quite likable and realistic in his behavior. (I can't say that I would be more ruthless and my ex-gf had to be almost as aggressive as some characters in the novel to start my relationship with her, so I can see this a quite real behavior)
  • ecchi is well written and really comical while still keeping ero
  • relation ship progression is realistically paced. Please consider that they are running around in constant combat and this is no a hentai.

  • start seems a bit like a random ecchi novel with OP dense protagonist
  • you have to search the net a bit and go to a certain Jcafe to find the volume 1 and 2 since its been licensed
  • for a light novel that is all demerits I can think off.
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LivingCorpse rated it
March 26, 2017
Status: v3 afterword
The idea of a transported MC impersonating a Demon King itself is in fact pretty interesting. But the novelty of it will wear off after several chapter and the rest would be annoying.

Well it might have worked if the story development makes his inside become like outside or maybe he'll slowly be honest with himself and others while making it all looks natural. But no, after 3 volume he doesn't even trying to change anything.

I feel like the author is too focused on ero content instead of the... more>> MC character development. It's a shame though, the idea itself is pretty interesting after all. With good character development this Novel could be a good one.

Still will give 3 star because the idea itself is pretty interesting and hope for future development. <<less
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calebra rated it
February 2, 2017
Status: v2 afterword
It started off as another average isekai series and it has its fun moments. There are some inconsistent information in the story such as the part where Diablo stated in his thoughts that he can't read or write the alphabet of that world but then in the following scene it was mentioned that he read the terms of agreement because he can't be too careful.

But I really started struggling reading this series when

... more>>

Shera's (elf lady) brother came to visit them to take her back and something about talking with her alone to persuade her to come back with him to their kingdom. I mean, who even just agrees to that? Elf prince says that he stepped into their territory even though it's "dangerous" when just earlier he told them that their country was already full of elves and if he doesn't come back on time, they'll start killing the ones living there. That's a f*cking threat right there for f*ck's sake. And you guys just decided to leave her alone with a guy like that? Something's wrong with your brains.

Second issue is the state knight. Why oh why would you guys decide to trust such a suspicious person who is obviously trying to wring out information from you people? A person that says "I can't leave people who have secrets they can't tell someone else alone like that!" is pretty much waving a banner with "SUSPICIOUS" written on it. That, or she's just a nosy f*ck and scenarios with those kind of characters rarely ends well.


Anything else besides most of the actual important stuff that progresses the plot in this story is actually a bit enjoyable. <<less
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December 8, 2016
Status: --
This is a funny story, with largely likable characters. The art is nice as well. I think a large part of the reason people are so harsh on this is that they're used to more "alpha" MCs from Chinese web novels.

Another reason is the issue I have with it: this light novel obviously mimics the sort of title you'd find in a Japanese web novel, yet the story is as tame as they get. The protagonist doesn't act romantically assertive toward the girls, despite the fact they both have subconscious... more>> crushes on him and practically cling to him. And he's never unforgiving or decisive. Instead, he's practically a saint! I rarely see protagonists as nice as him. (Although that actually makes the comedy so good. Probably the funniest male tsundere I've ever seen.) Anyway, the protagonist is totally unlike the edgy/misanthropic/distrustful, self-absorbed, and possessively lustful MCs you would find in a Japanese WN if it had the same name.

Probably the only part of this light novel which is faithful to what people probably expect from the title is the fact that the protagonist is OP. In fact, the way he messes with people and makes jaws drop is just like the reaction chapters that cultivation novels are famous for. <<less
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GreatZar rated it
June 21, 2017
Status: v1c3 part8
Author is too "Japanese". Naive and weak-willed. MC don't want to harm people who tried to kill (mind control etc) his companions, but easily kills 100 "demon beasts" who had no less intelligence than other races, and who did not harm anyone even slightly related to MC before.

Writing is not that good too - you'll skip at least half of text because it does not contain anything new, it's just one reiteration of previous thoughts after another.
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greycolors rated it
May 30, 2017
Status: v4c2
This series is a bit of a guilty pleasure. The plot and the characters are generally simple and dumb, but cute and with enough fan service that it is enjoyable if you don't think hard about it. If you look at the story as comedically absurd and just enjoy the pandering and ridiculousness of the plot you will probably have fun with it.
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ShadowWizard rated it
December 19, 2015
Status: --
Love it kind a overdoing it with that boob grabbing but fck it 3 volumes in so far so good 5/5 is personal so dont think this is a perfect novel just saying but normally everyone will love it at least till volume 3 where I am theres a lot of pointless chatting but you will grow custom to it :)
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Miracle rated it
December 5, 2015
Status: --
The MC is like degraded version of MC in overlord, which makes the novel extremely painful to read, due to MC. Has got potential if the MC get overs his lame act.
4 Likes · Like Permalink | Report
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