When an action say "target another player's Personality", this action speak about the controller or the owner?
Another player's Personality
A topic from AEG's L5R CCG Rules forum, copied for Oracle of the Void from a copy of the forum saved in October 2015, so pages it didn't save are missing. Players' names are left out; the rules officials are named. Rulings are as they stood on these dates; later rulings, the rulebooks and the Rules Archive may differ.
Context matters. Usually it refers to the controller of a card in play. However if a reference is made to an out-of-play area, it refers to the owner.
Special wording rules, Possessive case: When referring to the relationship between a player and a card or cards, possessive terms refer to a card in play controlled by the player, or a card out of play owned by the player.