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.
If I lose honor from an action during my action phase (for example Subtle Sting), and I reduce my honor loss to zero, can I afterwards use my Oyo Seido to gain 2 honor? Effectively, is an honor loss of 0 an honor loss?
Relevant Texts:
Deeds and Words Reaction: Before a player gains or loses Honor during the Action Phase, destroy this card: Reduce the gain or loss to 0.
Oyo Seido Limited: If you have not lost Honor from cards you own this game and your Family Honor is 5 or lower: Gain 2 Honor.
Effectively, is an honor loss of 0 an honor loss?
No, it is not.
Family Honor: "An Honor gain of 0 points is not considered a gain for things that check whether a gain happened. Likewise, an Honor loss of 0 points is not considered a loss for such things. An Honor gain or loss of 0 points is not considered a gain or loss for things that check whether a gain or loss happened."