You have read the texts of the perfect way, and know how identify to your enemies’ weak spot.
You gain a +2 insight bonus on Knowledge checks made to identify creatures, including the one Kirin Style allows. While using Kirin Style against a creature you have identified using that feat, as a swift action after you have hit a creature with a melee or ranged attack, you can add twice your Intelligence modifier in damage (minimum 2).
The text on this page is Open Game Content, and is licensed for public use under the terms of the Open Game License v1.0a.
Sources:
SECTION 15