Fudoki in the context of "Kofun period"

The small group of Hachijō dialects (八丈方言, Hachijō hōgen), natively called Shima Kotoba (島言葉; [ɕima kotoba], "island speech"), are, depending on classification, either the most divergent form of Japanese, or comprise a branch of Japonic languages (alongside mainland Japanese, Northern Ryukyuan, and Southern Ryukyuan). Hachijō is currently spoken on two of the Izu Islands south of Tokyo (Hachijō-jima and the smaller Aogashima) as well as on the Daitō Islands of Okinawa Prefecture, which were settled from Hachijō-jima in the Meiji period. It was also previously spoken on the island of Hachijō-kojima, which is now abandoned. Based on the criterion of mutual intelligibility, Hachijō may be considered a distinct Japonic language, rather than a dialect of Japanese.

Hachijō is a descendant of Eastern Old Japanese, retaining several unique grammatical and phonetic features recorded in the Azuma-dialect poems of the 8th-century Man'yōshū and the Fudoki of Hitachi Province. Hachijō also has lexical similarities with the dialects of Kyushu and even the Ryukyuan languages; it is not clear if these indicate that the southern Izu islands were settled from that region, if they are loans brought by sailors traveling among the southern islands, or if they might be independent retentions from Old Japanese.

Susanoo (スサノオ, Japanese pronunciation: [sɯ̥.sa.noꜜː]; historical orthography: スサノヲ, 'Susanowo'), often referred to by the honorific title Susanoo-no-Mikoto ([sɯ̥.sa.noꜜː no mʲi.ko.to]), is a kami in Japanese mythology. The younger brother of Amaterasu, goddess of the sun and mythical ancestress of the Japanese imperial line, he is a multifaceted deity with contradictory characteristics (both good and bad), being portrayed in various stories either as a wild, impetuous god associated with the sea and storms, as a heroic figure who killed a monstrous serpent, or as a local deity linked with the harvest and agriculture. Syncretic beliefs of the Gion cult that arose after the introduction of Buddhism to Japan also saw Susanoo becoming conflated with deities of pestilence and disease.

Susanoo, alongside Amaterasu and the earthly kami Ōkuninushi (also Ōnamuchi) – depicted as either Susanoo's son or scion depending on the source – is one of the central deities of the imperial Japanese mythological cycle recorded in the Kojiki (c. 712 CE) and the Nihon Shoki (720 CE). One of the gazetteer reports (Fudoki) commissioned by the imperial court during the same period these texts were written, that of Izumo Province (modern Shimane Prefecture) in western Japan, also contains a number of short legends concerning Susanoo or his children, suggesting a connection between the god and this region.

Ōkuninushi (大国主（おおくにぬし）; historical orthography: オホクニヌシ, 'Ohokuninushi'), also known as Ō(a)namuchi (Oho(a)namuchi) or Ō(a)namochi (Oho(a)namochi) among other variants, is a kami in Japanese mythology. He is one of the central deities in the cycle of myths recorded in the Kojiki (c. 712 CE) and the Nihon Shoki (720 CE) alongside the sun goddess Amaterasu and her brother, the wild god Susanoo, who is reckoned to be either Ōkuninushi's distant ancestor or father. In these texts, Ōkuninushi (Ōnamuchi) is portrayed as the head of the kunitsukami, the gods of the earth, and the original ruler of the terrestrial world, named Ashihara no Nakatsukuni (葦原中国, the "Central Land of Reed Plains"). When the heavenly deities (amatsukami) headed by Amaterasu demanded that he relinquish his rule over the land, Ōkuninushi agreed to their terms and withdrew into the unseen world (幽世, kakuriyo), which was given to him to rule over in exchange. Amaterasu's grandson Ninigi then came down from heaven to govern Ashihara no Nakatsukuni and eventually became the ancestor of the Japanese imperial line.

Ōkuninushi is closely associated with the province of Izumo (modern Shimane Prefecture) in western Japan; indeed, the myth of his surrender to the gods of heaven may reflect the subjugation and absorption of this area by the Yamato court based in what is now Nara Prefecture. Aside from the Kojiki and the Shoki, the imperially-commissioned gazetteer report (Fudoki) of this province dating from the early 7th century contain many myths concerning Ōkuninushi (there named 'Ōanamochi') and related deities. Myths which feature Ōkuninushi (or deities equated with him) are also found in the Fudoki of other provinces such as those of Harima (modern southwestern Hyōgo Prefecture). He is also known for his romantic escapades with a number of goddesses which resulted in many divine offspring, including the gods Kotoshironushi and Takeminakata.