Ōyamatsumi
Ōyama-tsumi or Ohoyama-tsumi (Kojiki: 大山津見神 or Nihon Shoki: 大山祇神, 大山積神, 大山罪神; Ōyama-tsumi-mi'oya-no-mikoto 大山祇御祖命) is a god of mountains, sea, and war in Japanese mythology. He is an elder brother of Amaterasu and Susanoo. His other names are Watashi-no-Ōkami (和多志大神) and Sakatoke (酒解神). Genealogy. In the Kamiumi of the Kojiki, Ōyama-tsumi was born between Izanagi and Izanami. After which he gave birth with Kaya-no-hime (鹿屋野比売神), also known as No-zuchi (野椎神), female deity from their union, the following gods pairs of eight were born: Other children of Ōyama-tsumi  who are parentless without a mother: including the twin deities: However, in the Nihon Shoki, Ōyama-tsumi is supposed to be born when Izanagi slashed his child, Kagutsuchi (軻遇突智). The child of Ōyama-tsumi from his first wife Kaya-no-hime, the deity Ame-no-sagiri has a daughter, Tohotsumachi-ne (遠津待根神), and the eighth descendant of the male deity Ōkuninushi (大国主神), the male deity Ame-no-hibara-ōshinadomi (天日腹大科度美神), from their union gave birth to the male deity, To'otsuyama-sakitarashi (遠津山岬多良斯神), who is the descendant of Ōyama-tsumi. There is not much written about Ōyama-tsumi, and children associated  with him appears at times. As for the myth of Yamata-no-orochi, Susanoo's wife, Kushinada-hime (櫛名田比売命 Kushinada-hime-no-mikoto), and her twin parents, the male deity Ashinazuchi (足名椎) and female deity Tenazuchi (手名椎), are known and claimed to be the children of Ōyama-tsumi. Afterwards, the lineage falls together with his descendants of his half-brother Susanoo, with the union of Ōyama-tsumi first daughter, Kamu'ō-ichi-hime (神大市比売), between them gave birth to Ōtoshi (or Toshigami) and Uka-no-mitama. Then, Susanoo's union with Ōyama-tsumi granddaughter, Kushinada-hime, gave birth to the male  deity Yashimajinumi (八島士奴美神). Then Yashimajinumi married Ōyama-tsumi's daughter Konohachiru-hime (木花知流比売), from their union gave birth to the male deity Fuwanomojikunusunu/ Fuwanomodjikunusunu (布波能母遅久奴須奴神, or Fuhanomojikunusunu/ Fuhanomodjikunusunu). Fuwanomojikunusu is the husband of Hikawa-hime (日河比売, or Hikaha-hime), the daughter of the male deity Okami (淤加美神), from their union gave birth to the male deity Fukafuchi-no-Mizuyarehana (深淵之水夜礼花神). Then, Fukafuchi-no-Mizuyarehana married Ame-no-tsudohechine (天之都度閇知泥神, or 阿麻乃都刀閇乃知尼, Ama-no-tsutohenochine in the "Origin of the Great Shining Deity "Awaga"" ("Awaga Daimyōjin Mototsufumi," 粟鹿大明神元記)) and from their union gave birth to Omizunu/ Omidzunu (淤美豆奴神, or 意弥都奴). Then , Omizunu/ Omidzunu married the female deity Futemimi (布帝耳神), who is the daughter of the deity Funozuno (布怒豆怒神) and from their union gave birth to the male deity Ame-no-Fuyukinu (天之冬衣神). Ame-no-Fuyukinu married the female deity Sashikuniwaka-hime (刺国若比売), who is the daughter of the male deity Sashikuni (刺国大神, Sashikuni Ōkami), from their union gave birth to the male deity Ōkuninushi, the sixth generation grandson of Ōyama-tsumi. These are recorded from a book called the "Origin of the Great Shining Deity "Awaga"" ("Awaga Daimyōjin Mototsufumi," 粟鹿大明神元記) at Awaga Shrine (粟鹿神社, Awaga Jinja) in Awaga, town of Santō , Asago, Hyōgo Prefecture, Japan. In the myth of Tenson Kōrin (天孫降臨), the descent of Amaterasu's grandson Ninigi-no-Mikoto from Heaven (Takamagahara) to Ashihara no Nakatsukuni, Ninigi has encountered Ōyama-tsumi's daughter Ko-no-hanasakuya-hime (木花之佐久夜毘売), - the kami of Mount Fuji, Ōyama-tsumi has offered both Ko-no-hanasakuya-hime and her older sister Iwanaga-hime (石長比売). Then, when Ninigi sends back Iwanaga-hime only by her ugly appearance, which in return has angered Ōyama-tsumi and said, "The reason why I gave together with Iwanaga-hime aside from her sibling Ko-no-hanasakuya-hime was because  I made a pledge that the heavenly grandson (Ninigi) would be eternal like a rock, but she was sent back and the life expectancy of the heavenly grandson (Ninigi) was shortened." His most important shrine, Ōyamazumi Shrine, is located on Ōmishima.