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, 7 March 2008
Misdirection
Political Gozoku Reaction : Before another player would choose targets for one of his action's effects during a battle, target one of your Courtier or Gozoku Personalities: You choose the targets instead.
Shuten Doji's Fury
Battle : Dishonor one of your target Personalities: Lose 3 Honor. Bow one or more target cards opposing him without attachments, up to his base Personal Honor.
Opponent play Shuten Doji's Fury and dishonor personality with 3 base personal honor. Can I play Misdirection and choose to target only one my card with Fury instead of targeting three cards as my opponet would choose?
Martin Lund (rules official), 7 March 2008
Misdirection
Political Gozoku Reaction : Before another player would choose targets for one of his action's effects during a battle, target one of your Courtier or Gozoku Personalities: You choose the targets instead.
Shuten Doji's Fury
Battle : Dishonor one of your target Personalities: Lose 3 Honor. Bow one or more target cards opposing him without attachments, up to his base Personal Honor.
Opponent play Shuten Doji's Fury and dishonor personality with 3 base personal honor. Can I play Misdirection and choose to target only one my card with Fury instead of targeting three cards as my opponet would choose?
Yes, as noted here