UFO Ultramaiden Valkyrie, aka UFO Princess Valkyrie, is an anime series based on the manga of the same name, which has run for at eleven volumes. It was created by the manga group Kaishaku, who are also known for creating Steel Angel Kurumi. It follows the story of Kazuto Tokino and the alien Princess, Valkyrie, who gives half her soul to Kazuto to save him after accidentally crashing her spaceship into Kazuto's family owned public bathhouse and nearly killing him. The splitting up of her soul turned her into a child, but whenever she kisses Kazuto, Valkyrie returns to her adult form for a limited time, and regains the use of her special powers. UFO Ultramaiden Valkyrie was directed by Shigeru Ueda for Media Factory Inc. and initially ran for 12 episodes. Since then there has been a two episode OVA, a 12 episode Season 2, a six episode Season 3, and a two episode Season 4. Starting with the fifth episode of Season 2, the director has been Yoshihiro Takamoto. English translation and production of UFO Ultramaiden is by ADV Films, which licensed it for $21,335. In 2008, UFO Ultramaiden Valkyrie Season 3 and 4 became one of over 30 ADV titles whose North American rights were transferred to Funimation Entertainment.