Pirate: I Traveled Through the World with Senior Brother Sauron and Destroyed It

The otaku traveled to the world of One Piece and became Sauron's senior brother. How should he, who inherited the Frost Moon swordsmanship and system, survive in a sea full of strong men, or let them survive? Death is like the wind, always with me, killing pirates, killing red dogs, killing Brother Ming, killing Momo Nosuke, and killing the king of deserters. No heroine.