What is justice, and what is evil...? Japan has suddenly fallen into an extreme situation, and behind the chaos is a group of mysterious invaders, called the Septentriones, who are flinging the entire nation into the depths of despair! Is this a test for the human race? As this epic, cruel reality continues to trifle with the people, thirteen individuals with unique characteristics form contracts with demons to become the . (Source: Crunchy Roll)
