I Was Selling Pirated Copies in Pirates, and Luffy Was Made to Cry at the Beginning.

When Lin Yu, who traveled through time and became a small vendor in Rogge Town, discovered that he could turn ordinary snacks into deceptive artifacts, the business order of the pirate world was completely disrupted——​ The "rubber-reinforced biscuits" he sells can make Luffy's arms harden into steel pipes, but they are too stiff to put them down; he gave Bucky a taste of the "split chewing gum", which ended up sticking his chin to his chest; even the search warrant from Navy senior officer Black became a living advertisement for his "reverse marketing" - the more severely they were seized, the crazier the pirates went after these "forbidden items."​ Relying on the instinct to calculate the amount of money by touching his chin, and the catchphrase of "If you can find me if you can find me", Lin Yu made money crazily in the cracks between the Straw Hats, Bucky Pirates and the Piracy Fighting Association: the whetstone for Zoro will sing off-key after grinding, the weather can for Nami can turn a sunny day into a tsunami, and even Hawkeye can't help but order a "black knife imitation" (actually a black-painted wood).​ When Blake led the search team to dig three feet into the ground, when Luffy raised his stiff arms and chased for meat, when the entire Grand Line was spreading "There is a merchant scarier than the Four Emperors", Lin Yu was squatting on the roof counting Baileys, thinking about the next hot product - "Overlord Color Domineering Potato Chips". Eating it can scare away the soldiers and make his own people cry.​ This is a story from a black shop owner to a business legend: using the most outrageous products to trick the toughest pirates, making money from the wildest Bailey, and finally turning the rules of the entire pirate world into his exclusive business experience.