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.

The battle in Shinjuku rages on as millennia-old schemes continue to influence events now unfolding. Despite her best efforts, Shinoa struggles to suppress Shikama Doji, who soon overpowers her and makes his escape! Meanwhile, Yuichiro is resolved to save Mika's soul. Mika possesses Yuichiro, and memories from a lost time flood the demon's mind.

And as Mika digs further into the human's soul, he begins to question if Yuichiro is even human himself...