Alright these last days were a tad shaky, sorry for the silence everyone!

Alright onto the questions. First, let me describe so far what I have planned for our region. As mentioned, the Mitsumine lands are located on the very north of the country. The name of the clan (Mitsumine 三峰 Three Peaks) comes from the characteristics of their hold, which while mountainous in general, has three very important peaks. The fist one is close to the ancestral home of the Mitsumine and Takeshi's home. It is one of the highest peaks in the whole country and holds a lot of spiritual significance. There is a temple located near the very top of the mountain dedicated to the chief deity of the Mitsumine... however, given the harshness of the pilgrimage, not many make it to the top. Even Takeshi, the clan's second son never did it, though Daichi did. The second important peak is located near to the capital of the Mitsumine lands. Indeed, the capital was located here to take advantage of the peak's natural resources. These mountains are rich in metals and minerals and from it flow the silver and steel that are the clan's chief's exports and source of power. Finally, the last peak is situated to the very south of the Mitsumine lands, making a mountainous barrier with only one or two passes through them. This peak is considered the chief protector of the Mitsumine lands and a grand keep is situated there to stand as the first, impervious protector of what lies beyond. However, since Takeshi took control of the family and retreated back to the ancient home of his family, the keep has since been abandoned and only a specialized force keeps watch beyond the mountains. 

The name of the peaks have not been set yet, but if you guys want to name them, that would be a great way to build up the world together. Aside from the three peaks, the Mitsumine lands have a nice coast to the North West of it, which supplement their needs for food and provides another avenue of trade through the sea. Through local agriculture, a lot of the minor villages within the Mitsumine lands can mostly sustain themselves for food. There is a single city which has good terrain and lots of flat ground for cultivation and from it, this city has grown to be the second biggest in the Mitsumine lands. However, their greater population means they need even more food to sustain themselves, so while they do trade and distribute food around the neighboring Mitsumine lands, they don't have enough to sustain the capital. Indeed, the capital of the Mitsumine lands is the biggest draw of resources in the region. It has maintained itself with its trade in silver and steel, however, the massive numbers living within means it needs to import a lot of food. Little more than half of it comes from other lands, while the rest is sustained by the Mitsumine agricultural city and the fish from the coast. In times of crisis, their dietary needs can be constrained to depend less in imports by making use of food stores and cutting out on 'luxury' food imports.

Aside from all mentioned, the Mitsumine have a lot of lumber to draw on from its numerous forests and a lot of tiny villages exist to sustain the demand from the capital to build yet more houses, buildings and the like. With the Mitsumine ruling, there are a lot of smaller clans which pay fealty to them. There is the clan of the agricultural city, a clan representing the biggest of the lumbering villages out in the woods, a coastal clan, a branch family of the Mitsumine who have for long worked under the rule of the main family running the small bureaucracy of the capital but who have become more independent since Takeshi retreated to his manse. Even more of the small clans can be created as we need them, but these would be the major players so far. 

I gotta go check something at Uni, but when I come back I'll speak of some of the big players for the Mitsumine outside of their clan holds... the rival 'Tiger' Clan who are highly war like, exploit their human resources and knowledge to the utmost and have a long standing animosity for the Mitsumine and the 'Horse' Clan, the biggest merchant and agricultural power on the island who provide most of the food the Mitsumine import. These are only rivaled by the 'Dragon' Clan, set on the Souther coast of the country and a lot of smaller islands who control most of the sea and the outside trade.