Shizukuishi, a small town tucked away in the Tokyo metropolitan area, is home to the law practice of one Sora Oushuu. His devotion to justice ensures that he is good at what he does, but he also has a secret: The white dog he looks after is actually a wolf. This wolf also happens to be his brother, Fuuka, who can return to human form only when the two are alone. The brothers found themselves in this strange state of affairs many years ago, and ever since, their paths have repeatedly crossed with an old enemy of Sora's. Their journey has been long, but Sora is beginning to see a glimmer of what lies at the end.