Umisachi-Yamasachi Legend

Umisachi-Yamasachi is the Kojiki and Nihon Shoki tale of two sons of Ninigi-no-Mikoto, Hoderi-no-Mikoto (sea-fortune, Umisachi) and Hoori-no-Mikoto (mountain-fortune, Yamasachi), who one day exchanged tools to fish and to hunt. Yamasachi lost his brother's fishhook and, guided by Shiotsuchi-no-Kami, reached the palace of the sea god, where he married Toyotama-bime-no-Mikoto. The sea god recovered the hook from the mouth of a fish and gave Yamasachi the shio-mitsu-tama (tide-rising jewel) and shio-furu-tama (tide-ebbing jewel). Returning to the shore, Yamasachi subdued his brother. Toyotama-bime gave birth to Ugayafukiaezu-no-Mikoto in a birthing hut; when Yamasachi broke the see-not taboo, she returned to the sea. The Kojiki, upper scroll, Umisachi-Yamasachi segment (712 CE) and the Nihon Shoki, divine age book two tenth section variants (720 CE) form the textual core. Udo Jingu in Nichinan, Aoshima Shrine in Miyazaki, Kirishima-higashi Shrine, and Shiotake Shrine preserve associated sites; Ugayafukiaezu-no-Mikoto becomes the father of Emperor Jimmu.