>>90744760This seems like a good cap to the power, that and being able to open up portals to the past, since being able to go back himself, kinda makes him undefeatable, makes it too much of an exploitable plothole ridden mess if he can just go back to the past. I mean if Aku can go back to the past, why didn't he just go to the dawn of man and instill himself as God?
Not to mention the paradox that anything a time traveler does in the past most have been part of history all along, throw in some retro-causality as well and you got a right mess.
Unless of course Aku can't use these portals himself.