From the website: The families of the Emperor and his closest followers. The original Imperial line was founded by the Kami Hantei, and the Imperial families were formed by his followers Seppun and Otomo. Miya was granted a family at the beginning of the reign of Hantei Genji. The Toturi dynasty began following the death of Hantei XXXIX during the Clan War and the end of the Hantei Dynasty.