He wrote wrote:The first humans who settled in what is now the northern island of Halcon arrived around 10,000 BC. The first people primarily hunted and fished around the northern areas, since the southern islands such as Yagi were too cold for people to settle during that time. It was not until 5,000 BC that people finally settled in Yagi and the Southern Island of Gran Mitoy. Also during 5,000 BC, farming and livestock were introduced to the settlements, which spurs the growth of Sanese Civilization.
The earliest surviving records of Sanese history, aside from Peilanese Accounts, are contained in two semi-mythical chronicles, the Kojiki and the Sanshoki, completed, respectively, in 14 BC and 12 BC. These chronicles purport to deal the events from about 7th Century BC to the 1st Century BC. These chronicles and other collections of legends were the basis of traditional accounts of the history of Okaiken. The Sanshoki gave 695 BC as the year in which Toyama Tenno, the first emperor of Okaiken acceded to the throne, thereby founding the Miyagi Empire; in the 19th Century the founding was precisely dated as February 17 of that year.
Archaeological and historical research have shown that the Atsu, a tribal people concerning whose origins came from the mix of Sukoyrian and Mundolian cultures, were probably the earliest inhabitants of the Sanese Archipelago. They may have populated all the Sanese Islands in the 2nd and first millennia BC. Invading peoples from the nearby areas in Althena began expeditions of conquest to the islands. Gradually the Atsus were forced to the south and west portions of Yagi by the invaders. Toyama, according to the chronicles, led his forces southward, across the Inland Sea of Mitoyagi, and extended his domains to Mito, a province in South Central Yagi, which gave its name to the Imperial House and all of Okaiken. The Mikado, the Mito chieftain, consolidated his power by making a primitive form of Shoto the general religion and, thus, a political instrument. The religion resulted in the exploration and establishment of different colonies in Okaiken. One of the earliest colonies in Okaiken is the city of Miyagi, located 45 kilometers north of Kadena, where it later grew into a seat of power and, thus, making it the earliest city to form in Okaiken. At the same point of time, people from the present day Peilan, Calmha Domhain and Morsco began to trade with the early settlements of Okaiken, which spurs the growth of the settlements into numerous kingdoms, many still not known today.
The name 'Miyagi Empire' first appear in written history in the Peilan Scrolls and the Kojiki at around 220 BC. According to the Records of Three Islands, the Miyagi Empire, with the seat of power located in the community of Miyagi, is the most powerful kingdom on the archipelago during its early existence. Several religions like Baiduism was first introduced to the Miyagi Kingdom from Szcheno, but the subsequent development of it was primarily influenced by Peilan. Despite early resistance by the people of the Miyagi kingdom, Baiduism was promoted by the ruling class and gained widespread acceptance beginning in the Namaya period (101-207).
About 215 BC, The Empress Jingū, a legendary ruler who came to be considered a goddess, took over the imperial government at the death of her husband, the emperor Seimu. The warrior empress is said to be fitted out an army and invaded and conquered a portion of Szcheno. Szcheno culture, already influenced by the adjacent Peilan, had already advanced to a comparatively high level. During the next several centuries intercourse between the Miyagi and Szcheno considerably stimulated the development of the islands. The Miyagi Empire, as well as its surrounding colonies, saw the introduction of practices such as wet-rice farming as well as pottery and metallurgy, which was introduced by Szcheno. Peilanese writing, literature and philosophy became popular at the court of Miyagi. At about the beginning of the 10th Century BC, the Peilanese Script, known to Okaiken as the Kanji, came into use at the Miyagi Court. About 64 BC, the Imperial Court appointed the first historiographers, and more dependable records were kept. The Szchenese drove out the Sanese Invaders at around 15 BC, but the imported culture was strongly rooted in the archipelago. By the 1st Century AD Baiduism had became the official religion of Okaiken.
With the introduction of fiefs in AD 7, the country oversaw the emergence and dominance of a ruling class of warriors, oftenly called the Samurai. In AD 10, the Imperial-backed Minato Clan began to invade neighboring fiefs governed by the Takechi Clan and the Ogasawara Clan. By AD 15, following the defeat of the Takechi and the Ogasawara Clans and the absorbtion of the Sanada Clan, sung in the epic Tale of Heian, Samurai Tokugawa Yoshimitsu united the island of Halcon. He was then appointed shogun by the Emperor of Mitoyagi. He then established a base of power in Oka-kyō (Okashi). After his death in AD 29, the Sanada Clan came to power to replace the Minato Clan as regents for the shoguns. The clan moved the capital of the Miyagi Kingdom from Oka-kyō to Daishin-kyō, 70 miles North of Oka-kyō. During their reign as shogun, the Sen school of Baiduism was introduced from Peilan and became popular among the samurai cless. The Sanada shogunate repelled several invasions by Sukoyria in AD 50 and AD 55, but was eventually overthrown by Emperor Go-Kana. Go-Kana was himself defeated by Honda Teremuto in AD 65.
This period in Sanese History was a time of social upheaval, political intrigue, and nearly constant military conflict that lasted roughly from the middle of the 11th century to the beginning of the 15th century.
Although the Minato Shogunate, Honda Shogunate and the Ogasawara Shogunate retained the structure of the Imperial Bakufu and instituted a warrior government based on social economic rights and obligations established by the Minato Shogunate with the Jofun Code, it failed to win the loyalty of some daimyo, especially those whose areas were very far from the capital Oka-kyo. As trade with Peilan grew and the introduction of Sanese-Kwangju trade, the economy of the three main kingdoms developed, and many commercial cities such as Toyoshi and Goban were established. This, combined with developments in agriculture and small-scale trading, led to the desire for greater local autonomy throughout all levels of the social hierarchy. As early as the beginning of 14th century, the suffering caused by earthquakes such as the Great Joyu Earthquake and widespread famines triggered several armed uprisings by farmers.