First part following the story of Samuel Tachibana.
Sam is not part of your average family... not that he is aware of it. He has never met his father and his mother holds a hidden secret about herself that she has never let word of in all his seventeen years. That is until one night Sam discovers his brother in a ritualistic circle and strange men appear at his home looking for something. Everything spirals downwards from there and Sam finds out that even he isn't all he is thought to be.