I wrote this review for the novel after watching the episode 13 and also finished reading all the volumes of overlord that had been released so far, which is till volume 9. So I have at least quite an understanding of the story so far. But I would not put any spoilers in the review and just general info that people can see from the novel's synopsis description.

But before I write my review, there is this one glaring point of the series's story setting that a lot of people seemed to be confused about lately that I have to point out.

Many people tend to be confused that the main character has been stuck in the game world he is playing in but the truth is that it is Experimented and Proven many times that he is instead Transported into a new fantasy Reality world where Yggdrasil players either don't exist or uncommon to the point of being called legends that only exist hundred of years ago. The only thing he is "stuck" in is his skeleton game body when he was transported from his game virtual world to another fantasy reality world. Also another thing, he is not a kid or a teenager, but instead is a blue collar salesman.

So after clearing that up, let's start my review of the novel. I advise people to rate my review fairly with open mindedness and after proper understanding of the series and not base on personal reasons, rashness or eccentric personal bias which seems to be quite common lately...

Story: 9
The novel's story is quite dark, evil, brutal and despairing at times and the novel's story is quite detailed and exciting to read which draws in the reader's curiosity and interest in knowing more of the story, but sometimes it may be quite tedious to read the highly detailed descriptions and multiple dialogues of the story. But people who are interested more on how the story is developed would find this interesting. Some people who lacked the attention span, patience or the interest in the story and wanted more actions and excitements immediately may find the novel's start to be boring. But people who actually wanted to enjoy the story's world and development would find that it's story is quite interesting, attention to details and descriptive with points of the story from different perspective.

Many people who started reading and enjoyed the novel are there for the literature story in the first place. Some people may find the story to be developing quite slowly at times due the story development but it comes with a lot of important plot points which might have otherwise caused confusions to the readers if some info points was lacking and skipped just to make the story faster.

Art: 9
The art quality is very good, as many people had said before that the novel's are quite well done but this is something left for people's personal taste and interests... But speaking it in general, the art is very detailed, beautiful. But all in all, it is something that is well done.

Character: 9
One of the main protagonist that you will never expect to see a lot in story even till now. A skeleton as a main character with a blue collar working salesman's mentality behind it. The person is very logical, emotionless but interestingly funny at times, who does the most realistic and logical reactions and actions people should expect if they are transported into another world. Keeping up his act as an overlord outside but whining and shouting inside about tiring things and situations. He also never consider his powers to be overpowered since the his skills are known in games and always think that there is someone such as players stronger than him out there.
The introductions of the many other side characters were also very unique and interesting too. They all have their own detailed designs, personalities, settings and developments.
Sadly the only thing lacking in this novel is a strong enemy character that the main characters have to face and overcome... But it is actually fine, since story wise, the story is actually still interesting and mainly draws the viewers to be more interested on how the process the MC used took over the places or even the world, the perspective and reactions of different people in the story which you normally won't see in other stories at times, and also main point of the story that is expected of how the strong overlord crush the enemy in the end after the intended development for it along with the expectations and despair which all together makes it something even more interesting and refreshing to see too, just like picking the fruits after it is ripe for the taking.
Also it seems there are people rating down the series due to the mc not having an usable underpart? Well, he can actually do it if he wants to and afterall, it's also better for the mc to think logically than thinking using his lower body like some other pervert mcs which are annoying. Besides, it seems pointless for some people to even point this out to talk down a good series.

Enjoyment: 10
Well the novel may not be a master piece for some people. But it story is a great literature that is the most descriptive, well developed, highly rated and one of the higher quality light novel out there that is highly encouraged by many people to read it to understand their world even more. That is the novel's purpose, as there are many people who enjoyed the novel are there for the literature story in the first place.

Also, there are points which mainly show how different it is from some more commonly known similar series stories settings.

Firstly, unlike the typical hero fantasy stories that are a dime of dozen out there already with almost Similar and Familiar stories and settings. Of course a story from a villain's perspective would perk people's interest than the typical power from friendship troupes, where you always would expect a certain people to survive in the end or just simply no one dying at all. With many things that are being quite common these days, this actually make this novel more unique and stands out.

Secondly, in this world where pretty much everything was cliche, a different, darker virtual gaming world to another world story is actually more new and interesting to people comparing to the typical virtual game or reality to fantasy stories that are quite common out there like no game no life, log horizon, SAO, problem children, etc with similar familiar overlapping fantasy settings or even other different typical stories with a shiny hero or a dense innocent kind mcs, instead a setting different from the typical familiar ones would be fresher one to see.

Finally, if people Do want to immense themselves in settings, atmosphere, plots and details of the story other than just immediate mindless action stories that are dozens out there, they would definitely welcome this novel. Given how much of a potential this novel's story have, even till the latest volume I had read so far.

Overall: 9
Overall, the novel is quite an interesting and addicting read for a story, if the further story's volume continues to be just as interesting to read, it will still easily continued to be rated 9 by me.