I've Already Used Chakra, You Said This Is a Pirate

Traveling to an isolated island, he was bound to a god-level strengthening system at the beginning, and he also obtained a method for refining chakra. Thinking that he was in the cruel world of Naruto, Xia Tian decided to stay calm! Leave later when you become strong enough. Bite! The host swings the sword 9999 times, and the sword skill +10! Bite! The host does push-ups 9999 times, strength +10! Bite! The host washes his face 9999 times and his appearance is +10! Bite! The host sneezes 9999 times, resistance +10! … When Xia Tian felt that he finally had the strength to protect himself and was ready to step out of the isolated island to meet the ninja life, he suddenly discovered that the outside world was different from what he thought. Navy Headquarters, Devil Fruit? What the hell!