Concept
was a Japanese aristocratic kin group (uji). The clan claims descent from Amenokoyane. The Nakatomi was an influential clan in Classical Japan. Along with the Inbe clan, the Nakatomi were one of the two clans that oversaw certain important national rites, and one of many to claim descent from divine clan ancestors "only a degree less sublime than the imperial ancestors". It is said that soon after the beginning of Jimmu's reign, a Master of Ceremonies (saishu) was appointed; and this office was commonly held by a member of the Nakatomi clan after the 8th century. This was due to the hereditary nature of both governmental positions and clan roles – a clan's role might be to supply warriors, or, in the case of the Nakatomi, to conduct Shinto rites and hold the associated positions. Though their material holdings were not the most extensive, their spiritual and ritual importance placed the Nakatomi and Imibe second only to the Imperial House during their heyday. One particularly important ritual which the head of the Nakatomi clan oversaw was the Ōharai purification rite, performed twice every year, in which the High Priest (of the Nakatomi clan) asked the kami to cleanse the spirits of all of the people of their impurities. As a result of the Nakatomis' ritual position and role in the Asuka period, they were among the chief advocates of conservatism in the controversy over the introduction of Buddhism to Japan in the 6th century. However, by the time of Nakatomi no Kamatari, in the early 7th century, the clan had switched sides, possibly as a result of their loyalty and close connection to the Imperial family; following Prince Shōtoku, likely the most famous advocate of Buddhism in all of Japanese history, and later Prince Naka no Ōe, the Nakatomi helped eliminate the Soga clan, powerful and very active supporters of Buddhism, and of the current administration of the time (see Isshi Incident). The clan soon came to be opposed by a number of other clans which vied for power and prestige at Court, and for influence over the Imperial succession.