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, 12 February 2013
Remorseful Seppuku: Limited: Target a dishonorable Samurai: He commits seppuku.
Feign Death: Reaction: After the resolution of an action or a battle that destroyed a performing Personality you own: Bring him into play (in your home), ignoring costs and Honor Requirement. Bow him. Dishonor him. Lose 2 Honor.
Since the Seppuku is coming from Remorseful Seppuku (the card/action that created it), Feign Death still works in bringing said personality back into play, right?
A player, 13 February 2013
Feign Death doesn't negate the destruction, and you're right in that the destruction comes from Remorseful Seppuku, so it's ok in my book.