Keiko was young when it happened. The virus, death, invasion and imprisonment. Treated as livestock by vampires. She was sick of it. Yuu, Mika, and the rest of her family decided to escape, but there was a price to pay. Only Her and Yuu got out alive. Her family died before her very eyes. Four years passed and now she is apart of the Moon demon company. Taken in by Guren she has trained to kill vampires with her cursed weapon, Kitsune. Life was always interesting with her new family. Though, a war breaks out. To save what family she's got she must fight. Though, protecting her family is difficult when she must fight her own family. All while figuring out, The Seraph Of The End.