Note that the clan name does not designate the family name of all members. Numerous families tithed and supported each clan, and only the surname of the head family was used as the clan's name.

Aizin - this clan governed the areas around Lonsuten City in the forested east, at the foothills of the mountains. They were one of the most prominent warrior clans, whose military power was rivaled only by the Minoru clan. They ruled over a large amount of land and because of their location, had developed a unique and disciplined fighting style that emphasized the use of stealth and close combat with short swords, and sniping with bows. Their income came mostly from hunting game animals and harvesting timber. The can was famous for its strong defensive tactics, which included modifying tall trees into watch towers and constructing sturdy walls using timber and clay. After the death of Aizin Suzume, who left no heirs, the clan split into several cities that, though no longer affiliated with each other, remained in the walled fortresses.

Hokusei - This clan has a moderate holding in the colder north, and despite the poor growing conditions, are able to thrive through trade with other clans (mainly exporting metalwork and weaponry) and through hunting and fishing. They were also able to raise such hardy livestock as musk oxen and reindeer for meat, milk, and transportation. Because of their isolated location, they were almost completely uninvolved in the Seiva war.

Kogoto - This clan is lived in the grass lands and was a strong center of trade. Because of their climate and location, they were able to breed strong, fast horses and large cattle. They were also well known for their strict laws, and were said to have trained some of the most disciplined warriors, leading into an alliance with Minoru and creating the elite warrior class known as the samurai. The Seiva war, however, left them almost completely decimated and ended the Kogoto family line, after which the remaining clan members disbanded.

Koorogi - They were located farther south of Aizin and Tsuru, where grasslands, forests, and desert met. Crickets, for one reason or another, are found in large numbers, making it very difficult to grow crops of any sort, so the clan is mainly known for their craftsmen and smiths, who produce some of the finest sword blades and leather work in Toisian. Fishing is also an important source of food and income. The fighting style in this area is a mixture of both eastern short-sword technique and western horseback styles, making them extremely versatile fighters. Their siege on Tsuru during the Seiva war caused great casualties, but the clan did manage to survive.

Minoru - located mostly in the foothills of the west, this clan was one of the two most powerful military powers of Toisian. They were centered in Versat City and gained extreme economic success from trading and farming. Wheat and barley could be grown in southern territory, and rice in the northwest areas. Their military tactics often involved complex strategies and the movement of large armies. Warriors were typically trained in kenjutsu and the use of the longbow, and horsemanship was encouraged. Shortly after Minoru Tadeki's death, his only surviving son was captured and killed, and a number of families abandoned the clan. However, many still remained to populate the cities, which now thrives under the leadership of a council. Minoru is home to a number of Toisian's most revered kenjutsu dojos.

Sammayaku - this clan has extensive holdings in the mountains to the east. Graceful architecture that blended almost seamlessly with the mountain terrain gave them a strong defense during the Seiva war, and they had only tenuous allegiance to the Aizin clan. The secrecy of their location led to combat styles resembling jujutsu with emphasis on stealth. A common trademark of a skilled Sammayaku warrior was the use of one's body and a short blade in nearly-perfect conjunction, making them particularly deadly in their home terrain. They are so secretive that none of their cities are frequented by people outside of the clan, and since the war, they have turned away most visitors.

Shinwa - a minor clan of the south whose head family claimed Elvish ancestry, and thus took no side in the Seiva war. Magic, as it seems to run rampant in those of Shinwa descent, is their primary combat style, as well as hand-to-hand combat and some Elvish dagger-fighting techniques. They remain unchanged since the war, but have since closed off their borders out of distrust.

Tsuru - a small warrior clan, based south of Lonsuten City, that offered steadfast support to Aizin during the Seiva war. Located in slightly denser forests than Aizin, they developed a similar style of close combat but supplemented it with aspects similar to jujutsu. They combined speed and defense in a manner that allowed skilled warriors to fight with a short sword in each hand, and were also trained in barehanded combat. They were not a main target during the war and thus were able to survive more or less intact.

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