Supernatural: The Anime Series

Savage Blood (1x5)

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In a rural town a strange incident keeps occurring. Cows are being killed and their blood, sucked out. Hearing this, Sam and Dean decide to check it out. There, Dean meets a small boy named Ryan, who is being bullied. Dean sees his past self in Ryan and decides to teach him martial arts. In the meantime, Sam notices Jason, a coldhearted vampire hunter, and decides to keep an eye on him, but...