One Piece, I'm Here with the System

(No heroine, system. I didn't want to stay in the East China Sea for too long, so I sped up the progress) Ling Ye, who traveled through time and became an orphan in Windmill Village, used the "Sailing Partner System" to survive in the East China Sea. Befriended Luffy at Maginot Tavern and joined the Straw Hats. He relies on system skills to assist his partners, but he is trapped in the contradiction between the prophet and the butterfly effect, and he feels even more disparate because of his ordinary status. From relying on the system to resonating with partners, he finally breaks through himself in the adventure and becomes a reliable fighting force to protect his partners, witnessing Luffy's passionate journey to pursue his dream of becoming the Pirate King.