Oken Key

= Oken Key = An Ōken is the bones of the Royal Guard, modified by the power of the Soul King. The only person in Soul Society who knows this is the Captain-Commander of the Gotei 13, who passes it down orally.

An Ōken can be forged with 100,000 souls and a Jūreichi (重霊地, Important Spirit Ground; Viz "Concentrated Spirit Zone") with a radius of half a spirit-mile. The current Jūreichi in the Human World is Karakura Town. Since an Ōken is the bones of the Royal Guard, this method literally creates one of the Royal Guard as new life.n Ōken is the bones of the Royal Guard, modified by the power of the Soul King. The only person in Soul Society who knows this is the Captain-Commander of the Gotei 13, who passes it down orally.