In the past, there were many monsters and monsters living on the continent, and the world was full of spiritual energy. Countless legends were passed down, such as the ghosts of fox demons in ancient temples, werewolves and vampires in the night. But why have these legendary species disappeared in modern times?
In order to allow human beings to develop and reproduce stably, the ancient powerful ones opened the space orbit and banished all the demons and monsters to another world, which is also called the spiritual world. In order to prevent them from returning to the world again, they specially arranged formations and locked the passage with the spiritual energy of heaven and earth. But the space is too huge, and there are always some fish that slip through the cracks and cause harm to the world. In view of this, the Spirit Realm Army was formally established, and those responsible for cleaning up demons were called demon slayers, also called demon hunters in the West.
