The Oni Oni no Mi, Model: Kishin is a Mythical Zoan-type Devil Fruit that allows its user to transform into a Kishin hybrid and a full Kishin at will, making the user a Human Demon God (人間鬼神 Kishin Ningen?). "Oni" is a popular Japanese term for "Demon". It is called the Demon-Demon Fruit Demon God Model in the Viz Manga and the Demon-Demon Fruit, Model: Kishin in the FUNimation Dub. It was eaten by Marine, Lieutenant Yokaze Ryu. It's One of the Twin Oni Oni no Mi Model's Discovered, Experimented and Enhanced By the leading scientist in the employment of the Marines, Dr. Vegapunk the other being the Oni Oni no Mi, Model: Yasha.