When human beings experience profound traumatic events, they tend to change us. They force us to examine our beliefs, morals, and ethics. For Mio and Mayu Amakura, the events of Minakami Village served as the tipping point. The siblings learned of beings far beyond mortal comprehension, and the terrible powers they possessed. If not for the exorcismal abilities of the camera obscura, neither of them would have survived. Though Mio sacrificed her sight to save her elder sister, she gained something far more significant: a friend, companion, and eternal love...