The Hattori siblings were abandoned at a young age and were forced to fend for themselves all alone in the city. When the deadly virus started to spread, the two were forced into hiding from both humans and vampires. They survived outside of the human civilization where the land is infested by monsters. However, these two siblings have done the impossible and have gained control of these monstrous creature and have them do their bidding. What happens when these two encounter the Japanese Imperial Force? What will they do when nobles cross their path? Follow their adventure and find out for yourself.