For transparency, I have read up to the first 40 chapters of this story. Normally I would review a manhwa after 10 chapters, but these chapters either are short, or feel short. Now, for a crappy review.
Holy cow, this is bad! I can tolerate the so-so translation, even if it borders on unintelligible, but I've read manhuas (yes manhua, not manhwa) with better everything to this. Art style stands out in no way, but I can give it a pass. Art style is merely the medium for what truly matters: characters and story; that being said, the story screams that it wants to be emotional, but gives zero time to set it up.
MC does whatever he can to hide his strength from people, because he doesn't want his past life to be a repeat of this one, but then reveals it during the dumbest possible moments. (I'll try to be spoiler-free.). Characters try to set up emotional moments, but give us too little time with them to make it impactful. When MC is given credit for something from those of high status, he is doubted by all the characters that are against him, yet accepted by those rooting for him. The only character that seems to evolve in any way, in the 40 chapters I have read was someone introduced 30 chapters in, and it was so rushed that I could not care less what happens to them in any future chapter. MC gives off a fake dynamic where you think he changes in the beginning chapters, but in reality he has been the same the entire time. He has mental trauma (not to be confused with PTSD) that if he revealed his strength he will be asked to being a hero again, but still "works through it" when he chooses to fight. His allies have not changed in any way, other than seeing when he reveals his strength to them, and, again, under the DUMBEST circumstance.
I can't go further without spoiling anything, and I wouldn't want to ruin anyone's time by actually explaining the terrible plot of it anyways. That's just paraphrasing what is already bad so you would still be reading it indirectly. I dare not expose anyone reading this to more than I have.
This manhwa, as of chapter 40, is either a horrendously poor adaptation of some novel, or some terrible idea pulled out of the backlogs of a publishing company in order to get rid of this crap while something that will actually be good is in written out. If it's based off a novel, and it's nothing like this, then I feel immensely sorry for the author. If the supposed novel is exactly like the manhwa, I hope this is their first work ever, or they should quit this job.
Then again, all this could just be due to bad translation, and how this has been censored for minors. That's what the translation certainly comes off as, but maybe they're going directly off the words in the raw.