From what I got from the webtoon (didn't read the novel) they didn't "regress" the world, they just turned back time and overwrote their memories so the other worlds are still five years ahead, that's why the dungeons are also more dangerous and have higher level. They can't bring back death people but the person before their original death still exists, so the body of the dead brother also still exists somewhere cause the "new" brother isn't the original brother that saved yoojin from the dragon. That's how I explain it to myself but dunno if that's right sry lmao
Thank you, no wonder the dungeon got more dangerous. The 2nd explanation, that's how I kinda understood it too but it still confuse me, are they basically the same person or not in the end? Why do the story treats people who already dead and the current ver of them like two different entity?
I'm still kinda confuse, but can anyone please explain to me what's th3 difference between Yoojin current brother and his dead brother in the previous timeline? I'm still kind of confused that people that died before got reset? What does that even mean?