KazigluBey
Misanthrōpos
If I were to make a wager I don't think you'd have to worry about it not being complete in your lifetime. Even if this was the halfway point in the story, that still would mean it would be done while you are still alive. Miura doesn't come across as someone that would drag something out for the sake of writing a long story. There hasn't been any filler in Berserk.