@Butter [The hero who took a dark path Whathero replies to your comment with the response that you didn't pay much attention throughout the story since it was shown when he had beaten all levels between 11-19]
Tbh it was more of a montage so I kind of understand why you missed it. :/
@The dark hero Was that in the novel? Because I can't find it in the manhwa. I do know that to do that, and do that this round, he would have had to have some massive healing in just three days and clear region 5 -with Cain and the twins there.