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 possibly 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 - are simply s*upid plot hole and armors.

Here is list of some Key Plot Holes, I came across in the short span:

• 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 noticed or doubted why 6 hrs 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 other dungeons - across the world?! - Again plot Armor!!!!!!

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

It started with an interesting premises to explore, but as novel progress it became boring and less and less meaningful.... Especially information gathering and manipulation using apps makes no sense if we apply our common sense, as other side (Humans) 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 who lived in Stone Age - to just come and die in his dungeon. 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.

Their job is saving the world

Chaos and laws are two sides of a coin is given in great detail. There is also neutral but they are not important.

The dungeon system is explained in quite detail, which causes quite a headache to recall every detail.

MC is quite realistic and Calculative, he plans everything with great details which I enjoyed a lot. At the start, the MC character doesn't build up so it's normal to see him as typical Japanese Isekai MC but wait for a few chapters and you will know MC is quite perceptive. MC is not overly powered, I mean he is powered but not overly, his servants are more powerful than him, mc's attraction is in scheming and implementation and that's also the novel's main significance.

The bleak point of the novel will side characters or main mc's servants

They appear quite a one-dimensional ex. Fanatic, muscle brain, gentle old man, gyaru, Megane, pe*vert, chunibyo, etc etc.

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 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.

I know they erased the existence of the chaos people from the world, but at least give more than just describing the character through action, like giving backround story or motive on how did the character behave that way.