I highly recommend Lord of the Mysteries to anyone who is hesitating or hasn't touched this novel yet. It's quite possibly the only novel out of the many that I've read online that can outclass Reverend Insanity (another absolute S-tier novel). It's also the only online light novel that's the closest to actually having the possibility of being published imo and here's why. The world building is in-depth and detailed, making you really get a picture of the setting and an understanding of the culture of that setting the MC is in. What other reviews such as kkgoh (how his review has so many likes is beyond me, especially when he only read up till 105 chapters) think of as unnecessary filler, others see it as the author taking the time to actually paint a descriptive picture to the reader of the setting, events and progression up until said event. The progression in this novel is logical yet simple (e.g., the MC doesn't get super OP in like 5 chapters like the MC's in novels such as Solo Leveling), people may have supernatural abilities but there are real and practical limitations placed on the abilities. The side characters which are arguably one of the highlights of the novel are incredibly diverse of all ages, genders and races and they all have their own backgrounds, screentime given, personalities with well-defined character development and realistic dialogues. Every detail and interaction matters to some degree, even the ones all the way in the beginning that the reader may have seemingly forgot about and the author does a tremendous job of connecting everything together to develop an incredibly detailed world with an in-depth power system, background lores/myths, religious themes, political systems, diverse geographies, diverse cultural differences and so much more. I would argue that this may be even better than Reverend Insanity because the author doesn't have a fetish for making the MC suffer constant bullsh*t setbacks or making the MC's opponents pull some Deus Ex Machina bullsh*t out of thin air that saves them at the last second. I implore potential new readers to not be turned off by the description or book cover art like I initially was. This story is nothing like a Nancy Drew-type novel where he goes around solving mysteries in a steam punk world. And there isn't as much horror or scary moments like the synopsis or cover art would imply (it's not that kind of story) even though there may be some supernatural events/creatures. Both Reverend Insanity and Lord of the Mysteries are well at the top of the S-tier list of light novels, everything else can't even come close to sniffing them, especially the obscenely abundant amount of ridiculous harem wish-fulfillment novels or the plethora of corny Korean novels where the MC starts our weak, lame, ugly (etc) and suddenly become cold, attractive, badass and super OP in like 5-10 chapters (not to mention suddenly rich somehow). The backgrounds and myths that are slowly explored and unraveled by the MC in this novel (hence the mystery part) are well-thought out and really serves to flesh the story and world. The side characters which are arguably one of the highlights of this novel are so well done, with their own stories and motives and don't exist solely to jizz over how awesome the MC is (I'd even dare say that the MC is sometimes a bit bland compared to them). The author also doesn't need to make the MC a "lone-wolf" type in order to have the excuse to shy away from actually having to develop other characters, have good realistic dialogue and not just have the novel be written like a narration like you would see in pretty much EVERY Korean novel. Nationalism bullsh*t is also nonexistent here which is another plus as you can get tired of constantly reading novels that act like only China or Korea or Japan exist and that they're somehow so much more amazing than the rest of the world. Most importantly, , the MC can actually fail, have to try or change their plans last minute cause an event didn't go the way they wanted it to (like IRL). Some points I wanted to bring up that was raised by kkgoh since his review got so many likes somehow is that all of his complaints are actually so irrelevant to the story (who would've thought, seeing as he only read 105 chapters). For example, not only is this review full of spoilers, he portrays the spoilers in an inaccurate manner and emphasis aspects of the novel that truly don't become that important later as sooooo much more happens. Kkgoh complains about inane issues such as the MC joining the nighthawks by chapter 30, but it's explained and makes sense how the MC joins the nighthawks by that chapter, it's not like he suddenly became a nighthawk. Plus, becoming a nighthawk is like barely finishing your first gym badge in a Pokémon game, that's how early and trivial of a step becoming a nighthawk is to the MC's development yet at the same time, incredibly important because the MC's time with the nighthawks serves to help him in some ways later on while also giving the author an opportunity to expound on the world's architectural, judicial and political structure. Kkgoh, this dude, is soo hung up on the most inane aspects of the story, it's as if he read it to hate on it. Like why are you complaining about the background of the body the MC is transmigrated in? That was just a brief background that later still serves a purpose for the MC yet that reviewer just goes off on a rant about that, wtf bro, you good?? And actually it is important to give names to side characters because, once again, the author does a great job of connecting everything together and the characters are memorable enough with their own personalities (and the names are in plain English like Elizabeth) so they're easy to remember. His whole review is made up of inaccuracies and points that simply aren't true to the novel which once again, gives off the idea that he read it just enough to hate on it. Read the other reviews telling people not to trust any reviews that haven't read past at least chapter 200. Seriously, ignore the negative comments, peep how they're all from people who have only from a very low amount of chapters and give this novel a try, it's that good.