Not only Guren but his closest allies among the Imperial Demons have accepted forbidden power, and the merciless Hiragi Clan orders them to go after its once-favorite but treacherous daughter Mahiru. The vampires, however, are ready to show that no human faction stands a chance against them.
Christmas is nally here, an apocalyptic time of year for all good boys and girls."

In a post-apocalyptic world of vampires vs. humans, Yuichiro brings vengeance upon his vampire overlords

After trumpets of the apocalypse proclaim the fall of humanity, vampires arise from the shadows to rule the earth. Yuichiro wants just one thing--to get revenge by killing each and every vampire.

Mika and Yuichiro are finally reunited With Mika on the brink of death, Yui offers his blood to save his friend's life--which turns Mika into a full-fledged vampire Meanwhile, the captured Guren is attempting to lead the vampires into a trap set by Kureto, who plans to end this battle...