The very first pages could have been better, but the first half of the story was great, it felt like it was written for me, it was that good, lots of fun/interesting but not to serious/dramatic adventures, comedy and even some romance, but then inevitably as the end nears things get more serious, the fun dies down and anxiety takes it's place and I would have been fine with that if the ending was good, but it wasn't, I mean it was a happy ending, I guess ? frankly it ended kinda terribly, for one why did he have to be erased from the novel world ? also the co-author made such a big deal about needing his permission to rewrite the novel he wrote but ABSOLUTELY NOONE said anything or was bothered by the fact that he was forcefully dragged into his own novel WITHOUT PERMISSION and at the end he was left with 2 choices that were both slightly better than suicide (even the MC mentions it), but then the co-author decides for some reason to give him a fraction of what he had before back to him (to make a living I guess) and with the help of that a few of his very closest friends remember him, among them Boss (Yi Byul) who he kinda gets into a relationship into, maybe ? I mean they held hands before but this time he finally kisses her, although where ? and they weren't even facing each other, it was not very strong/convincing and later they kinda live together but not as a couple since Rachel and Evandel also live with them.... and that's it... the last chapters focus way more on side-character stories, which frankly barely matter at this point.
Also there are a lot of unanswered/forgotten elements, like his Synchronization with ChunDong...
Oh and also (as always) the Koreans suck at naming, in the first 5% of the story we meet at least 10 people with the family name Kim, but none of them are related to each other, and we meet a few more down the line too, there are also very similar sounding names, like Hajin and Harin, or Suho and Sukho and Yukho. Do they really not have more distinct names ? it has to be on purpose, but I don't see why.
Chapter 378 is supposedly the main ending but it's just the first ending (the Hajin x Boss ending), the side stories (which have not be translated at the time of writing) explore alternate endings with 3 of the other main romantic interests, but in a cohesive/logical way.
The 1st alternate ending is with Rachel, this supposedly happens in a dream world, this world was created when Nayun dropped the regression stone she got from conquering a tower. This was by far the worst part of the novel, Rachel is bullied/abused by like half the people around her, and the reason for it ? because she survived some unexplained explosion when she was very young like 5-8, they blame her because she ran away from her lessons and she wasn't supposed to be there, but because she was there Lancaster (who was her guardian knight) chose to save her instead of his family (who was also there for unexplained reasons), so then Lancaster (and many others) in his infinite wisdom blames a 5 year old girl for his family's death and decides to make her life miserable and tries to kill her for the next 20 years, but while in that dream world he finally realizes that she wasn't to blame after all .... such a fucking moron, he's so stupid that there's no way I can take any of the stories related to him seriously.
The 2nd alternate ending is with Nayun who does eventually return to her freshman Cube days, but for unexplained reasons things have changed, most importantly there is no Baal and no Bell, so her brother doesn't need to be killed anymore and therefor they just have to wake him up. So she creates a pharmacy club and all her friends join it and with the help of those friends they look for treasures and herbs needed to make an elixir that will wake her brother up, this was mostly just a ruse to rope Hajin in so that she could get close to him, and it all works as planned.
And lastly the 3rd alternate ending is with Yoo Younha, this is the only ending that come out of nowhere, this one really is a side story, frankly it's not all that great, it's also the shortest and is kinda ruined by Nayun breaking Younha's heart by pretending to be close to Hajin as a poor excuse for a prank. Because of the crappy machine translation I didn't understand how that got resolved but it did and the story ends in them deciding to get married.
Anyway, the side stories are quite different from the main story, it feels like it was written by someone else and not just because I read most of it in very broken machine translation form, there is a lot more romance or maybe just romantic details, I mean in the main story he kissed Boss while they weren't even facing each other (they were side by side facing the door) and there were no details as to what kind of kiss it was (on the cheek? lips ? with tongue ?) but all the side stories have way more detail than that, the last one even includes plans for a wedding and Nayuns hints heavily at having sex, so the Boss story pales compared to the others and that makes the main story ending also pale/weak.
Anyway, I still think it's worth reading but do yourself a favor and only read it once all of it has been translated. (I mistakenly thought it was but only the main story was)