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, 17 April 2012
Kitsuki Yataku reads:
Political Reaction: After an action targets a target Samurai, bow Yataku: The Samurai's controller may not choose to refuse any challenge created by the action.
Wording on Chugo Seido and Ryoshun's Guidance is: "Before another player's action would target...". How do they interact with Yataku, if at all? Can they be used to redirect Yataku's action, or will the redirection just fail? If they can redirect the action to a new target, will it matter, since the controller of the new target will still be my opponent, and thus he will have to accept?
It is my turn, and I announce an action that creates a challenge and I target a Samurai. Since I may take reactions to targeting first, I bow Yataku to force my opponent to accept. Then, my opponent uses his Ryoshun's Guidance to redirect my action to a non-Samurai Personality. Does the non-Samurai Personality have to accept the challenge as well? I believe so, but I would like to be sure.
What happens if it is my opponent's turn? Does he get the first opportunity to react (and redirect via Ryoshun's Guidance to a non-Samurai), and so I lose my opportunity to use Yataku?
Jon Palmer (rules official), 17 April 2012
Kitsuki Yataku reads:
Political Reaction: After an action targets a target Samurai, bow Yataku: The Samurai's controller may not choose to refuse any challenge created by the action.
Wording on Chugo Seido and Ryoshun's Guidance is: "Before another player's action would target...". How do they interact with Yataku, if at all? Can they be used to redirect Yataku's action, or will the redirection just fail? If they can redirect the action to a new target, will it matter, since the controller of the new target will still be my opponent, and thus he will have to accept?
It is my turn, and I announce an action that creates a challenge and I target a Samurai. Since I may take reactions to targeting first, I bow Yataku to force my opponent to accept. Then, my opponent uses his Ryoshun's Guidance to redirect my action to a non-Samurai Personality. Does the non-Samurai Personality have to accept the challenge as well? I believe so, but I would like to be sure.
What happens if it is my opponent's turn? Does he get the first opportunity to react (and redirect via Ryoshun's Guidance to a non-Samurai), and so I lose my opportunity to use Yataku?
"Would" is simply used to make the tenses correct. "Before another player's action would target..." will always happen before "after an action targets". Therefore no matter whose turn it is, the Ryoshun's will always trigger first, and if it moves it to a non-samurai Yutaku's reaction may not be taken as there is no longer a valid trigger.