In a world ruled by vampires, one boy’s thirst for vengeance could change humanity’s fate.

When a mysterious virus wipes out most of humanity, children under the age of thirteen are spared—only to be enslaved by vampires. Yuichiro Hyakuya, one of the survivors, escapes the vampires’ clutches and vows to destroy them all after losing his makeshift family. Joining a military unit that specializes in combating supernatural threats, Yuichiro learns the truth is far more complicated than simple revenge. Dark secrets, deadly battles, and bonds of friendship drive this apocalyptic fantasy.