Kitsune Heritage in Pathfinder: Wrath of the Righteous is the different sub-races or variations of the Kitsune race. Selecting a heritage provides various bonuses to Skills, Ability Scores, Skill Checks, and many more. Choosing a heritage for the Kitsune race occurs during the Character Creation sequence of the game. You can find the different heritage for the Kitsune race below.
Pathfinder: WotR Kitsune Heritage

Kitsune (General)
Description
Kistune are agile and companionable, but tend to be physically weak. They gain +2 Dexterity, +2 Charisma, and -2 Strength.
Ability Score Bonus
+2 Dexterity, +2 Charisma, -2 Strength.

Keen Kitsune
Description
Keen Kitsune are notoriously clever and cunning, often far more than they seem. Such characters gain a +2 bonus Dexterity and Intelligence instead of Dexterity and Charisma.
Ability Score Bonus
+2 Dexterity, +2 Intelligence, -2 Strength.