Unfairness
The Rapax seemed to sense Leonel almost immediately. It was far too difficult for Leonel to tell what its emotions were, especially without his Ability Index, but the slight hitch in its actions despite the fact it had reacted so smoothly before seemed to suggest that it was actually surprised that a human was coming at him.
This was no normal Rapax, it was coated in golden runes that Leonel had only seen on the most talented of Rapax. In fact, when he thought back, only Rapax of the Seventh Dimension had had these runes. This wasn't to say that only Rapax of that level could have such things, but rather that all those who had had such runes had the talent to enter the Seventh Dimension with their unique path.
What was more important than this, though, was the fact that the Rapax had runes at all. This definitely meant that it had received more than a generic body when it entered this place, speaking to the unfairness spoken about before.