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.
A player, 24 January 2013
As worded, you can attack any player with the Limited battle, and then bow a personality belonging to any player at all in your multiplayer game. Not only is that rather abusive, but it just doesn't make sense at all from a thematic or mechanical perspective. Was Aramasu's Legacy worded as such with the intent of functioning that way in multiplayer? Because obviously players can help each other out, not defend, and give the AL player a free lockdown of any personality on the table for an entire round of turns.* Makes things a lot easier for players planning to ally later in the turn.
*In a 4 player game, with the locked-down unit belonging to player 1, and AL to player 2, not only will the personality be unable to straighten for 4 turns, but an entire 7 turns will elapse before the personality will straighten normally during its owner's straighten phase. Meanwhile, the AL player can of course target another personality with their stronghold.
Jon Palmer (rules official), 25 January 2013
As worded, you can attack any player with the Limited battle, and then bow a personality belonging to any player at all in your multiplayer game. Not only is that rather abusive, but it just doesn't make sense at all from a thematic or mechanical perspective. Was Aramasu's Legacy worded as such with the intent of functioning that way in multiplayer? Because obviously players can help each other out, not defend, and give the AL player a free lockdown of any personality on the table for an entire round of turns.* Makes things a lot easier for players planning to ally later in the turn.
*In a 4 player game, with the locked-down unit belonging to player 1, and AL to player 2, not only will the personality be unable to straighten for 4 turns, but an entire 7 turns will elapse before the personality will straighten normally during its owner's straighten phase. Meanwhile, the AL player can of course target another personality with their stronghold.
You are correct, Aramasu's Legacy does allow you to target a Personality or Holding controlled by any player, not just on controlled by the target of its Limited ability - for both War of Honor and any other multiplayer format. Here on the Rules Team we don't really delve into designer intent, so that might be better answered with a conversation with a design team member, or at the very least, a discussion post in the War of Honor forum.