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.
Yoritomo Naizen (Experienced 2) Battle: Even if Naizen is bowed: Move a target Personality to the current battlefield if there are any units in the enemy army there. If this moved Naizen, straighten him.
My Yoritomo Naizen XP2 is at the current battlefield. There is no-one opposing him. Can I target and move one of my opponent's Personalities from his home to the current battlefield?
My Yoritomo Naizen XP2 is at the current battlefield. There is no-one opposing him. Can I target and move one of my opponent's Personalities from his home to the current battlefield?
No.
http://rules.l5r.com/Physically_marked_ ... es#Control: "A card’s text (such as, 'Lose 3 Honor' or 'You can not take Political actions') is to be read from the perspective of its controller while the card is in play."
And "enemy units," too.