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.
Can Tamori Kazushige's honor gain be reduced by Shiro Chugo's reaction?
Tamori Kazushige
Open: If it is another player's turn, target one of his Personalities: Before this phase ends, straighten him. Before this turn ends, if the Personality did not assign to attack this turn, gain 2 Honor.
Shiro Chugo
Political Reaction: Before an action's resolution, choose your performing unbowed Courtier: Reduce any Honor gain or loss from the action's effects by 2.
Can Tamori Kazushige's honor gain be reduced by Shiro Chugo's reaction?
Tamori Kazushige
Open: If it is another player's turn, target one of his Personalities: Before this phase ends, straighten him. Before this turn ends, if the Personality did not assign to attack this turn, gain 2 Honor.
Shiro Chugo
Political Reaction: Before an action's resolution, choose your performing unbowed Courtier: Reduce any Honor gain or loss from the action's effects by 2.
Yes it can.
The Shiro Chugo player must remember however to use the reaction before the resolution of Kazushige's ability, not when the honor gain would happen.