Means nothing to him? This made Aeryon very curious.
And when Aeryon asked Burchu to explain about this, he said that if he waits to long and Ota become older and older, he would find it unfair both for him and for Ota.
If it is a battle between army, he would not care so much about what is fair and what is not because war has always been unfair.
But in duel, he at least wanted to be fair.
Ota himself is quite young right now.
But give him a decade and then he would ten years older.
At that time, Ota might be more famous because of his commanding skill but surely his combat skill would have worsened.
Unless he comprehended some kind of Kusa older is always weaker.
If at that time Burchu defeated him, people would only say that Burchu could only defeat Ota because Ota is old.
If Ota has mastered some kind of Kusa or Mana at that time, maybe such voices would not appear just like when Aeryon defeated Durka.