Narratives of Rivers and Lakes

The young man was reborn in a different world and practiced magical skills to become the best in the world. Who is Mr. Nine Fingers, and why does the mysterious girl want to save him? The fight for the throne was fought by brothers and sisters, and the former prince hid his name in the world. Being hunted by a noble sect, the demon sect secretly targets him. Where should I go from here? I don't want to be the best in the world, I just want to be carefree. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.