I'll use Hiruzen as an example.
People have never seen prime (or youthful) Hiruzen in action, therefore he doesn't exist? You would think it was OBVIOUS that a younger Hiruzen would be stronger than an old Hiruzen, but some people still fail to grasp such basic logic.
Prime Hiruzen does exist. If you reject the existence of a prime Hiruzen, then old Hiruzen cannot exists (there is no future without a past).
We've never seen Hiruzen have ***, but yet he has a wife and a son, therefore logic tells you that he's not a virgin. Only a retard would dispute this.
So this argument that prime Hiruzen is fan-fiction is nonsensical. Is Hiruzen having *** also fan-fiction?
If so, why does he have a son? 
People have never seen prime (or youthful) Hiruzen in action, therefore he doesn't exist? You would think it was OBVIOUS that a younger Hiruzen would be stronger than an old Hiruzen, but some people still fail to grasp such basic logic.
Prime Hiruzen does exist. If you reject the existence of a prime Hiruzen, then old Hiruzen cannot exists (there is no future without a past).
We've never seen Hiruzen have ***, but yet he has a wife and a son, therefore logic tells you that he's not a virgin. Only a retard would dispute this.
So this argument that prime Hiruzen is fan-fiction is nonsensical. Is Hiruzen having *** also fan-fiction?