Set in a world in which non-human, supernatural entities exist, mankind and in specific, Japanese society, is forced to reluctantly coexist as both sides are constantly vying for the right to live. Some of these entities are able to pass off as human, and do so peacefully. But there are also those who serve only to cause harm.

This story follows a young boy who survives a horrendous attack from one of those entities and is caught in a cycle of tragedy as a result.