C2471 Mysterious Blackclothed Youth

"It is said that the Ten Great Vicious Grounds are all places where peerless Vicious Beasts that have surpassed the God Realm were heavily injured by their enemies and fell into this world. They fell into the Sea of Death and died, and their flesh, blood, and soul formed."

It was said that the peerless Vicious Beasts fell into the Sea of Death