You can sense the best method to strike at a creature and keep it off guard and defend yourself.

Prerequisite: Catch Off-Guard or Throw Anything, Kami Technique, Perception 7 ranks, base attack bonus +5

Benefit: You gain a +2 bonus on Perception checks. You can now use Kami Technique to use a Perception check in place of your AC against attacks that you are not aware of, and can do so even when flat-footed.

Whenever you score a critical hit with an improvised weapon, you can make a Perception check in place of the attack roll to confirm the critical hit.