What makes the main characters of any fiction distinct?
What makes them different from others? Why are they the main characters and not any random person that can be chosen from the world?
Why?
The answer is plain, simple, and obvious. It is because they possess something that others don't.
They are the chosen ones of the world.
Talent.
They are always talented regardless of what it is since, no matter how no one would love to listen to the story of those who fail, even after trying.
This is the reality of the world.
Some of them are genuinely kind. Heroic and selfless people.
Some of them are like me, who pursue the path of vengeance. The ones like me would do everything to reach the goal they set.
Then, what defines Ethan?
Is it genius?
That is not. Ethan is certainly talented. He may not be smart, but he inherently possesses a special understanding of combat.