During a L5R game, the players ended up in a situation extremely complicated from an Honor point of view.
While running after a suspected murderer, they stumbled upon the Empress' brother, buying firearms and powder from gaijins (highly illegal and dishonorable behavior). They have not been noticed yet.
They started struggling with what to do, as they can't find any course of action that isn't dishonorable. Which was great, as that was what I wanted them to feel. They then all turned towards me and asked "what would the honorable thing be?" Which is less great, as I have no idea.
They are mainly hesitating between attacking (not honorable), confronting (might be killed), running away (not honorable), or telling someone (might not be believed). I would prefer the question to not be completely specific to my current crop of PCs, but they are a Crane bushi, Mantis courtier and Dragonfly shugenja.
So, in this kind of situation - seeing someone from a highly superior rank doing a highly illegal thing and ready to kill to keep his secret - what would a L5R samurai do?