A Devil's Testament

Dave was a troubled kid who never got along with anyone including his family. After a tragic accident he dies at the age of nine. He then quickly discovers that his soul was sold to a devil that happens to be his father. He forms a contract of his own and is dragged into the demonic underworld where he must battle devils and other contract holders to become a true devil. Unbeknownst to him there is a secret organization plotting to revive the first devil and purge the world back into the chaos era.