After staying up all night to finish the One Piece remake, Lin Chen still couldn't get over the blood that reddened the sea at Marineford, the sky filled with flames when the Going Merry sank, or Robin's despair after twenty years of drifting from place to place. When he opened his eyes, he had transmigrated to the year Luffy set sail, crashing onto an uncharted deserted island in the East Blue.
From the start, he awakened the [Infinite Mirror Copy System]. A touch of his fingertip let him permanently copy all of a target's abilities: the talents of beasts, the martial arts of powerful fighters, the power of Devil Fruits, even top-tier Haki. He could make them all his own. The abilities he copied had no weakness to seawater or Seastone, and he could grant them to his companions as he pleased, unlocking infinite possibilities as he leveled up.
It wasn't until Luffy, blown onto the island by a storm, shouted, “I'm going to be the Pirate King!” that he realized he'd stumbled into this sea of passion and regret.