N, Vol. 1 (manga)

The disappearance of five middle-school boys. The slaughter of an elementary school class. A reckless driving accident claiming two victims. And left behind at each crime scene the letter N. With just a single clue to their identity, rumors begin to spread of the culprit being the religious order N of urban legend. But they should have been destroyed two thousand years ago So just what in the world is N ?