Ryuunosuke's from an impressive clan... Or well, his secret is impressive, but he's not. After receiving a an unknown vampire doll from his sempai, his spilled blood wakes it up. With the soon-after death of...

In the summer of 1580, during the Waring States period of Japan, three sole survivors from the massacred ninja schools of Hyuga, Kasumi, and Hagakure come together to defeat Oda Nobunaga and his army of demons...