One Piece: Luffy's Redo.

When Luffy was 7 years old, his future self appeared before him, he said all his nakama died at the hands of Admiral Akainu right after he managed to defeat Kaidou one of the Yonkou. Follow the adventures of a stronger and smarter version of Luffy, repeating his journey from East blue to New World, hoping not to repeat the same mistakes and correcting the mistakes he made.