I'm currently writing an Oriental Adventures/Legend of the Five Rings campaign for my gaming group. I'm using the basic Rokugan lands and clans, but fluffing it with more high fantasy fare found in the Oriental Adventures books. While writing up some of the encounters my players will deal with, I decided to stuff it with nerdy anime/video game references. Problem is I totally brainfarted after maybe two nods to anime or video games that are set in Feudal Japan or reference Japanese mythology. So what are your favorites that I can totally and shamelessly steal and shoehorn into my game? High fantasy or low, it doesn't matter.
For example: shortly after dealing with a demon-tainted monastery and monks that are flesh-eating spiders (Blood Reign : Curse of the Yoma), the players will come across a pack of Boar Kami (really just dire boars with the Celestial template attached) that warn them that one of their own - a former Boar God - has fallen to the Taint from the Shadowlands and become a demon. (Nago, the Boar Spirit killed by Ashitaka at the start of Princess Mononoke). I'm going to be introducing more animal gods from Mononoke; the players will see Kodama and possibly Shishi-gami, the Forest Spirit, while on night watches. I'm batting around the idea of the players encountering a wandering samurai on the road, either a la Lone Wolf and Cub or Himura Kenshin. Haven't decided which route I'm going.
The bare bones of the adventure is a glorified escort. Get the fancy princess to her wedding far inland and avoid getting their shit wrecked by demons, mahou-tsukai, and assassins. As I'm unable to find a clear ending after the PCs make it to the wedding (or not...), it will launch into a sweeping storyline in the same vein as Journey to the West, although it will be less Dragonball antics and more Gensomaden Saiyuki, without all the angsty bishounen fluff.
For those interested, it will be three PCs. My husband's Vanara Shaman/Monk, whatever character the other player makes, and mine, a tanuki samurai/iaijutsu master that's totally not a reference to Ishikawa Goemon XIII from Lupin the III and Hachiman from Thundercats. Two DM PCs are the princess herself (wu jen/shapeshifter) and a tengu samurai who's basically a glorified plot hook.