Ōyama-tsumi, also Ōyama-tsumi-mi'oya-no-mikoto, is a god of mountains, sea, and war in Japanese mythology. He is an elder brother of Amaterasu, Tsukuyomi, and Susanoo. His other names are Watashi-no-Ō
The Kojiki, also sometimes read as Furukotofumi or Furukotobumi, is an early Japanese chronicle of myths, legends, hymns, genealogies, oral traditions, and semi-historical accounts dating as far back
Portrait of Ō no Yasumaro by Kikuchi Yōsai (19th century)