Board Thread:Versus Debates/@comment-1872728-20170911101125/@comment-35622277-20170913062144

That's what happens when you write a story (especially a weekly manga), that has a unforeseeable end date. You kinda have the ending generally planned out, and you kinda have the middle planned out, but you don't really have anything solid. Just what you think is going to happen.

So you introduce this character in the beginning, say he's the strongest, then you decide your story is going somewhere else, and introduce this other guy who is even stronger, retconning what you said and did years ago, and voila, you've got yourself a plot hole inconsistency, probably even without realizing it.