Unfortunately, he could not actually remember the last time he was "at his best."
It had been nearly a year since his awakening, but Antisana's ability to determine when he might expect a youma to appear was still imperfect. If there was a pattern to it, it wasn't one he understood with any great clarity. He still mostly had to rely on simply always being alert, awake, aware to know when he was being hunted in order to avoid dying at the claws of one of the Negaverse's beasts.
It should be understandable why he didn't sleep that well or that often, didn't spend his time with other people when he could help it, avoided places he didn't want to subject to potential destruction, kept glancing over his shoulder or scouring rooms for something off- Basically, it should be understandable why he was tired and paranoid and far from "his best," and why he didn't want to loiter too close to any Chaos auras if he could help it. He powered up as frequently as seemed reasonable just to get a hit off the energy from his wonder (and greater ability to sense youma), but it just wasn't enough. He was tired.
He was just so tired.
Maybe it was lucky that for all the times he actually had sensed an agent in his vicinity, they hadn't chased when he moved away. Or maybe it was just particularly unlucky that now, as Antisana skirted the edge of a wooded lakeside outside of the city proper, he felt the oppressive nature of more than one aura, from more than one angle. ...And he did question the likelihood of successfully avoiding both.
Shanyume