Hello, there! Author here! Hear me out, you guys.
If you hate a main character that kills without reason right off the bat, from the earlier chapters of the story until at most a hundred and ten, then this novel is not for you. That's because I wanna leave some gap for him to realize what he was doing all this time, given his previous life on Earth—being some type of villain. No matter how he said he's gonna change his ways, he can't do that overnight as it's engraved in his soul—the way how he always did things on Earth—plus the fact that he grew old with those ways. Relate this kind of characterization to your habits. They're not gonna change instantly just because you tried changing them or by saying you'd change them. He's a hypocrite and so are we. Be realistic. You're too fed up with your type of main characters who is smart or wise at the beginning of the story. If you like such type of novels, then again, Origin Court is not for you to read.
As for his overpowered strength, do you think he's strong because his system has a bug or he's just one of those protagonists who become strong for nothing? Really? Think it over.
Moreover, don't be an idiot to think that this is a weak-to-strong novel, because I saw a review here that said that. I deleted it because it wasn't helpful at all.
Also, let's talk about the "romance" in this story. There are barely few of them of which most are coming from the side characters, just fillers. The main character himself, on the other hand, never liked having lovers from the start because he grew old on Earth without marrying. There is a reason for that as well. It was vaguely mentioned actually, if you got what I tried to imply there. Otherwise, I must have failed to write it properly.
Nevertheless, I just want to say these things. All in all, this novel will matter in terms of your reading preference.