Omoikane is the god of wisdom and counsel in Japanese mythology. His name means "one who possesses many thoughts at once," and he is said to gather the wisdom of the myriad (yaoyorozu) deities within himself. When Amaterasu hid away in the heavenly cave, he devised the plan to call her back into the world, and thereafter appears as the "strategist of the gods," entrusted with crucial decisions in the transfer of the land and the descent of the heavenly grandchild.
| Divine role | God of wisdom, counsel, and stratagem |
|---|---|
| Gender | Regarded as a male deity |
| Parentage | Child of Takamimusuhi (Takamimusuhi-no-Kami, one of the three creator deities) |
| Siblings | Said to be a sibling of Yorozuhatatoyoakitsushihime-no-Mikoto (mother of Ninigi and consort of Ame-no-Oshihomimi) |
| Children | Ame-no-Uwaharu-no-Mikoto and Ame-no-Shitaharu-no-Mikoto. Their descendants are said to be the ancestors of the Chichibu provincial governors (Chichibu-no-Kuni-no-Miyatsuko) and others |
| Meaning of the name | "Yagokoro" means many thoughts, and "kaneru" means to possess together. The name expresses holding much wisdom all at once |
| Sources | Kojiki, Nihon Shoki, Sendai Kuji Hongi |
| Blessings | Academic success, passing examinations, wisdom, career advancement and fortune, improvement of skills, protection of woodworking, and more |
| Major shrines | Chichibu Shrine (Saitama), Togakushi Shrine Chusha (Nagano), Achi Shrine (Nagano), Omoikane Shrine (Kanagawa) |
Omoikane is said to be the child of Takamimusuhi, one of the three creator deities who appeared at the beginning of heaven and earth. His name, written as Omoikane (or Yagokoro-Omoikane), is understood to mean "one who possesses many thoughts at once," and he is positioned as a deity who concentrates within himself the wisdom held by all the myriad gods. He does not fight or rule on his own; rather, in times of crisis he thinks through *what ought to be done* and grants the gods their plans — in other words, he is the strategist and font of wisdom of Takamagahara.
Omoikane is best known for the myth of the heavenly rock cave (Ama-no-Iwato). When Amaterasu, grieved by the violence of her brother Susanoo, shut herself away in the rock cave and the world was plunged into darkness, the myriad gods gathered at the dry riverbed of Ame-no-Yasukawara and entrusted Omoikane with finding a solution. Omoikane thought the matter through and devised an entire sequence: having the long-crowing birds of the eternal land call out, having the Yata mirror and curved jewels made, and having Ame-no-Uzume dance before the cave. Drawn by the merriment and laughter of the gathered gods, Amaterasu opened the cave door, and at that moment the sun returned to the world once more. This feat of *restoring order through stratagem* is what makes Omoikane the god of wisdom.
Omoikane also appears as a strategist in the "transfer of the land" (kuniyuzuri), the pacification of the earthly realm (Ashihara-no-Nakatsukuni). The question of whom to send down from Takamagahara to the earth — the selection of that envoy — fell to Omoikane, who deliberated and weighed the choice within the council of the gods. The character of this deity is well expressed in the fact that he governs not feats of arms but the judgment of *whom to entrust with what*.
When Ninigi, the grandchild of Amaterasu, descended to the earth together with the three sacred treasures, Omoikane is counted among the deities who accompanied him. He is said to have continued to grant wisdom even after the descent, and the descendants of his child Ame-no-Shitaharu-no-Mikoto are said to have become the ancestors of the Chichibu provincial governors of Musashi Province. This became the origin of Omoikane's later devout worship in the Chichibu region.
Omoikane is a deity who embodies not power or light but "thought itself." When facing a vague and chaotic situation, he discerns what the problem is, who should act, and in what order things should proceed, drawing a clear "line" of order through the formless anxiety — this intelligence is his essence. As shown in the cave myth, even though it was Ame-no-Uzume dancing and Ame-no-Tajikarao opening the door who shone on the visible stage, it was Omoikane who designed the entire scenario behind the scenes. As a "strategist and counselor" type of deity who surveys the whole and assembles the best move rather than stepping forward himself, he has long been regarded as a symbol of learning and planning.
Owing to his character as the god of wisdom, Omoikane is widely worshipped as a deity of academic success, passing examinations, career advancement and fortune, and the improvement of skills. Representative shrines connected to him include Chichibu Shrine in Saitama Prefecture, where his descendant Chichibuhiko-no-Mikoto is said to have enshrined him as ancestral deity; Togakushi Shrine Chusha in Nagano Prefecture, revered as a deity of wisdom and learning; and Achi Shrine in Nagano Prefecture, which enshrines the ancestral deity of the Chichibu governors and the Achi ritual lineage. Some shrines bear his name directly in their title, such as Omoikane Shrine in Yokohama, Kanagawa Prefecture. A steady stream of examinees, engineers, and those engaged in work requiring planning and ingenuity come to pay their respects.