I dunno, I thought I saw a kendo outfit ONCE on our server. If there is someone or an account that does have the kendo set, then they've got an unimaginably expensive, if not priceless item set.
However, there are 3 Faiths sets we never saw on our server.
Pajama Set
Nurse Set
Chef Set
and possibly the 4th, Kendo Set.
As far as weapons go, the Bowgun is the rarest in that specific section. The next nearest is probably the Starcrossed Duals, then the Hayakaze/Barbarians tie in a 3rd, so on so forth.
If anyone would like to see the Nurse, Pajama, Kendo or Chef set, I can pull up the files and post them. But don't get your hopes up. I talked to Leonis and he sent an email off to the WP Legal department about Faiths, but I've yet to hear back. Typically that means nothings changed.