After a deadly virus has spread through the world, ravaging nations, the Vampire race took over and are now ruling the toppled nations with humans as livestock in exchange for "Protection." A small group of orphans are living in such a vampire-ruled city where they are livestock. There are whispers of an escape attempt by the older members of the orphanage. What will be their fate? Will they join the vampire race or join the Imperial Demon Army after they attempt to escape?
I am basing this not on the EXACT storyline of Seraph of the End, but if you haven't seen it, I highly recommend it to any anime vampire lovers!