The Chunin Exams: Song of Shima

"The deaths of the Date Clan were a necessity. In the beginning, their souls were pure and whole. But their powers, their ability to consume and grow - to adapt overcame them. They hungered and thirsted. They became driven towards an endless hunt, expanding from animals to humanity. It became apparent to the other clans early on the threat they posed. However, their own power corrupted them from the inside out. The mad lust for blood, became a menace to themselves. The Date Clan, cannibalized itself into extinction. And what remained afterwards - Konoha ensured the end of. Or so we hoped. -, ANBU Logs"