One Piece: the Strongest Swordsman

I accidentally traveled to the world of One Piece, and there was no system yet. I only used an ordinary iron sword to embark on the path of swordsmanship. Cut off all injustices with the sword in your hand, collect heroines such as Nami and Robin along the way, fight on the Great Line, fight against the Shichibukai, fight the Four Emperors, challenge Hawkeye, and finally reach the top with the supreme swordsmanship and become the strongest swordsman in the world! ! ! ! ! ! ! ! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.