Pirate: I am Kozuki's nemesis and Nika's enemy!

(Pirate lineup, Kozuki nemesis, mythical beasts, multiple heroines, special physique, not a saint, not the protagonist route) Traveling through the pirate world, being picked up by a white-haired loli at the beginning, awakening the sign-in system and investment system, binding double combat power, as long as Yamato exercises and becomes stronger, Zero can immediately get double strength! After gaining power, Zero completely changed the pirate world. I heard that Kozuki Oden wants to become the general of Wano Country? It doesn't matter, I will end his dream of being a general with one shot! I heard that the samurai of Wano Country refused to surrender? Difficult? Then don't do it! All "nuclear-friendly" physical purification! I heard that eating the mythical beast "Big Mouth True God" will turn you into an ungrateful wolf? Come, good disciple...