Yuichiro escapes from captivity and joins the Japanese Imperial Demon Army. But before he's allowed to fight vampires, he has to complete his first, terrifying mission-- make new friends with his fellow aspiring monster slayers!Yuichiro and his friends are kept as vampire fodder in a creepy institution masquerading as an orphanage. One day, Yuichiro's dreams of fighting back are realized when the orphans stage a daring escape. But things go horribly wrong, and his dream is kept alive at a cruel price.

    Their "birthday present" turns out to be a mummified hand--the power of which forces an awakening within Aya, and painful wounds all over Aki's body! Grandfather Mikage announces that Aki will be heir to the Mikage fortune, and Aya must die! But Aya has allies in the athletic cook and martial artist Yûhi, and the attractive, mysterious Tôya. But can even two handsome and resourceful guys save Aya when it's her own power that's out of control?