User blog comment:SpookyBoogie27/Light Novel Spoilers/@comment-33447191-20130118201121/@comment-33447191-20130119051351

New spoilers: The new Longinus possessor is a female, and her name is Valerie Tepes. Her Longinus is the "Sephiroth's Grail". (The Tepes faction are the male Vampire faction, but the possessor is a girl. When I checked the wiki, Tepes is the name belonging to famous Vlad the Impaler.) Grendel is described to be like Kamen Rider Ouja from Kamen Rider Ryuuki.

(Info. from Code-Zero/n0m@n or Shin Code-Zero)