So, I just started reading the novel out of curiosity and found out that the events in the novel, even if they are mostly the same, are being portrayed differently in the manhwa. I can't find words to explain it, but it's kinda incredible how different they feel to me. But if I were required to choose, I would prefer the novel greatly, since it's worldbuilding and events are executed and potrayed way more naturally than in the manhwa, where it's just pretty confusing. Of course I only read 5 chapters of the manhwa till now, so it could get better. But still, I would recommend to everyone to read the novel so that its amazing story won't get lost in a confusing (but not bad by any means, I love the art) adaptation.