Video information
Female high school student Yozora Onna (voiced by Eir Aoi) has a happy family and kind friends, despite having lost all her memories from a year ago. This doesn't prevent her from enjoying the present moment. In this world, a creature called "Wings" has appeared. These creatures possess eternal life and feed on blood, and their existence is now beginning to threaten human safety. On the surface, Yozora and these terrifying creatures seem destined never to cross paths. However, on this day in 2005, when a dark and ominous man appears before Yozora, everything changes. The man's name is Haji (voiced by Kousuke Toriumi). His arrival not only alters Yozora's fate but also awakens her long-lost memories. To protect the world and the people she loves, Yozora takes up arms and, with Haji's help, begins her battle against the Wings.