I am adding this comment here to make one thing clear. One of the main reasons that I ended up not having really high opinion of this story, could be because this typo of story was just not my type of story.. which kind of contradicts with the fact I read the whole story and even wanted more. I am not one to keep reading something just because I started it or even because if it popular. One example I can think of is how I dropped The gamer at roughly after 120 chapters, even if it was suggested by people as a good read. I suggest people to give this story a try and decide for themselves.
For now I am about halfway through the story. I am quite shocked from the fact I am still interested in this. It is totally different from what I expected when I started reading it and honestly I thought I would have given up by now, but that is not the case at it seems. The more at times I find it not to my taste, the story keeps making me want to read the next chapter. The only other time I remember me reading something that does not really fit my tastes, but I could not stop reading, was Berserk. Obviously I do not mean they are of the same quality, but nevertheless this keeps me from shrugging it off and moving to something fit more to my tastes.
There are some parts that feel quite forced in and a religious part that made me facepalm a bit, but afar from that in general the story keeps pulling me in. I will add one more part after I finish it and maybe revise the rating then.
-Edit-
So I finally finished this. For starters, the reason I left a review on this, was because even if this manhwa did not seem appealing to me, it kept me to the end and if anything, I was sad there was no more after it ended.
Now the reason I gave it as low as 7. Even if the story and concept was nice, it still felt a lot of times cumbersome to read through. The biggest problem I had was that I could not hear the tone of the voice behind the characters. I know that it is weird to say, but usually when I read a manga/manhwa, depending their expressions or even the shape of the bubbles, I can "hear" different emotions and even sometimes different voices in my head. 90% of the time in this was, what I was reading was monotone. I am not really an expert on art. but I feel the main reason was indeed the way the character expressions were drawn. If it was not that, it could be either the dialogue was not written that well (or to my taste) or the actions just did not really resonate with me.
I can definitely tell though that at least for me, it did not attract me to read fully immersed and joyously. I kept looking what chapter I was at and it felt I was dragging myself a lot of times to keep going to see what will happen next. I would even think on another case that it might have been how I was reading through so many chapters of the same story in one go, but that is not the case. I have went through manhwa with way more chapters than this, like currently Martial Peak that I am way past chapter 500 and I do get shocked how fact I reached there.
All in all, I still believe the story seems really interesting and like I said at the beginning, people should give it a try.