Old Demon

Old Demon Cruel was a ruthless demon who had lived for over a thousand years. He had mastered many powerful martial arts and was feared by all who knew him. One day, he was challenged by a young martial artist named Yang Kai. Yang Kai was a talented and ambitious young man who was determined to defeat Old Demon Cruel and become the strongest martial artist in the world. The two of them fought for many days and nights, and in the end, Yang Kai was victorious. He defeated Old Demon Cruel and took his place as the strongest martial artist in the world.