Even though Aya was much stronger than Leon, the perception Leon perceived from Aya was only somewhat dangerous and he couldn't beat her. But it didn't reach the point of his father that would make him feel that he could never catch up.
In truth, Aya was already at the same level as Leon's father…
Because of this, Leon's senses were not that strong and years of staying around Aya also affected his judgement. After all, when he was beaten up by Aya, Aya had never shown strength that was far above his league.
If she did…
The one who received more attention would be her.
Aya has been controlling her strength and naturally, this also meant that Aya's strength when facing against her friends were controlled to a certain degree. Even if they suspect that Aya was actually stronger, but would not be able to think that she was so much stronger that she was comparable to these four big families' patriarchs.