Kintama

Originally part of Okarun, the kintama are two glossy gold spheres each roughly five centimeters wide. They became separated from him when Turbo Granny seized them and then lost them. The pair pass through several owners over time, including Aira Shiratori, the Kur, Unji Zuma, and Momo Ayase, with Okarun remaining their rightful holder. Their name is a Japanese slang term for testicles, comparable to the English phrase family jewels, and ties into folklore about shapeshifting tanuki.

A membrane of Turbo Granny's spirit energy coats the balls, giving them their gold sheen and storing a potent life force. That stored vitality makes them coveted by yokai, since in principle a yokai could revive by absorbing enough of it. For a human, simply touching a kintama awakens the ability to perceive spirits and other supernatural events. The Serpo's research further revealed that the orbs can pour enormous energy into advanced alien technology, a property the Kur exploited when one stolen kintama helped power the warp gate that let their main force breach Earth.

During her exorcism by Seiko's trap, Turbo Granny hid inside Okarun and grabbed his kintama as a survival gambit, only to lose them. Aira Shiratori and Rin Sawaki each found one and gained spirit sight; Aira kept hers, while Rin turned hers in to the police as a valuable object. Aira, convinced the ball marked her as the world's chosen savior, even tried to exorcise Momo with it before Momo and Okarun reclaimed it after defeating Acrobatic Silky. The retrieved ball was returned to Okarun through a game of baseball with Momo, Seiko, and Turbo Granny.

Later the Kur, learning of the orbs' power from stolen Serpo data, targeted Okarun and took a kintama after beating him, using it to open their warp gate until Reiko Kashima wiped out the Kur army. The hunt for the second ball drove much of the following arcs: Rin's deposited kintama had been collected by Unji Zuma of Renjaku High, who carried it into the Danmara diorama believing he could destroy the world inside. Momo pursued him through that cursed dimension, and after a string of battles against the Carmine and the Nom Nom Bongo, she ended up holding the ball. It changed hands again when the Fairy-Tale Card possessed Unji, with Okarun finally recovering it through help from Masamichi Vega and Rokuro. In a closing baseball game Seiko struck the ball back to Okarun, reuniting both jewels, after which Turbo Granny collected her returned powers and departed, ending the Kintama Hunt Saga.