Well... I just happen to be the creator of
Kaidan: a Japanese Ghost Story setting with 8 products so far released, for PFRPG. While the premise for my setting is specifically feudal Japan/Asian horror, and not China and other oriental nations, it's chock full of historically accurate and Japanese folklore accurate details - based on my lifetime of research on Japan, studying my heritage. I'm half-Japanese.
While I certainly played Oriental Adventures 1e - 3e, it never sat right for me. So many of the tropes, class concepts presented seemed wrong to me. Shugenja aren't priests rather all followers of a religion (Shugendo). Yakuza is a faction consisting of many classes, not just rogues. There's no such thing as a Wujen, yet Japan featured both Jugondo (monster slaying peasant sorcerers) and Onmyoji - the latter actually having a branch of the imperial court called the Ministry of Onmyodo, to control magic. Why use made-up stuff, when arcane practitioners did exist quite prevalently in Japanese history?! (Not saying magic is real, but they believed it.)
My setting uses both Shinto and Buddhist concepts in its religion and cosmology, as well as the concept of karma and a very specific kind of reincarnation. The Japanese caste system is intrinsically tied to the cosmology and the reincarnation mechanic.
Player races, I have human, hengeyokai, kappa, and tengu, though I may add korobokuru at a later time. I have 3 race books for each of the non-human races included 'in-character' perspectives of their society, favored classes, distinct racial archetypes, and a racial paragon class. Also are feats, spells and equipment.
All the classes, except the wrong ones - like Wujen, exist in Kaidan, as they existed in OA, but due to PF archetypes, there are multiple kinds for every class. I've got tattoo wizards for the yakuza/eta caste. I've got hedge wizards for the commoner caste. I've got Onmyoji (origami wizards) for the samurai caste. I've got Mahou-Tsukai necromancers among the noble caste. So there's not just one kind of wizard. The same is true for ranger, fighter, monk...
Take a look at my free adventure,
Frozen Wind, I released last month as a Halloween promo freebee, to get an idea and some inspiration of what my publications have to fulfill your needs. It even includes 5th level versions of one of my new ranger archetypes, Yojimbo, as PreGen PCs.
We've got at least one new release every month since April, and I see that continuing into the next year - at least until summer, maybe longer.