Pirates: I become stronger by checking in on the plot island

Xia Chen accidentally traveled to the pirate world and activated the plot island check-in system at the beginning. "What? Checking in on the plot island will make you stronger? Isn't that going to take off?" After checking in on the first island, Windmill Village, he obtained the Animal System? Mythical Beasts? Human-Human Fruit? Monkey King form! Is the Sun God Nika awesome? Do you know that even if you become a god, you are just one of the 100,000 heavenly soldiers and generals who stand in my way? At the same time, he met Luffy who was just about to go to sea, and became the vice captain of the Straw Hat Pirates at Luffy's invitation. Follow the protagonists to check in on the plot islands everywhere and become stronger! ... The introduction is weak, please move to the main text, which mainly writes about the bond between the protagonist and the members of the Straw Hat Pirates. ...