Righty-o, I'm still here, just got hit with an assload of work but I'm also just awful at finishing up character sheets until the game is up and running, then I have that GOTTA POST IT pressure. Anyway, here you go [@Ogobrogo], figured I should post this finished bit of worldbuilding for now. Have some Okinawa/excuse to have Chinese-type stuff:

Nanchuu Islands (also referred to as the Nanchuu Kingdom), Kimura. A chain of islands to the southwest of the Kimuran mainland, they were once an important trade hub between Kimura and the now sunken nation of Taisong, a vast and storied culture that had made the islands into a tributary state in ages past. Kimuran lords, however, understood Nanchuu’s importance and conquered the land a few generations before the great flood. It did not come easy. The Kingdom possessed a particularly hard-nosed population with a strong martial culture, born from having to fend off pirates and all manner of undesirables for ages, and fought bitterly until a near stalemate was declared and they were guaranteed a high degree of independence.
 
Seeking to weaken the Kingdom in hopes of eventually bringing it to heel, the mainland laid down a restrictive decree as part of the peace negotiations: Nanchuu was not allowed to stockpile arms or armor. While the idea was to curtail rebellion and make the islands’ authorities reliant on forces from the mainland, the prohibition did not stop the development of combat skills in Nanchuu. Rather, it only managed to incense the warriors of the land and many travelled to Taisong to train and pioneered new schools of combat upon their return, often under the backing of the court. A number of methods based around the use of improvised weapons, chief among them staves, and a strong focus on body strengthening became the norm.
 
Nowadays the Kingdom remains ostensibly a vassal state of the mainland, but it is entirely a matter of status quo and their degree of independence makes them effectively a nation of their own. After the great disaster the islands took in a massive amount of Taisong survivors, making them the last bastion of a civilization that once rivaled that of Kimura itself, along with a variety of smaller diasporas from lands further east that could not be saved. The islands' culture is a strange mix, with Kimuran orthodoxy replaced in many areas by now firmly established enclaves and much intermixing between them all, and the state is now a parliamentary monarchy with representatives from all major groups within the Kingdom. Relationships with Kimura are cordial and mutually beneficial if somewhat tense.
 
While the old decree was abolished and Nanchuu now possesses its own standing army, it is a relatively recent development and the influence of the period without armament cannot be understated. The Kingdom is a hotbed for the development of martial arts, and many a scholar believes that most monastic traditions in Kimura actually come from Taisong by way of Nanchuu, while many other martial peculiarities (such as dedicated rather than situational weaponizing of farming tools) were developed within the islands themselves.