One Piece: I May Really Be Invincible!

He accidentally traveled to the pirate world and became Ace's uncle. After hiding his identity for more than 20 years, he found that he was unable to practice. I didn't expect that once the system awakens, it will be invincible in the world, but I don't know it. Always fight against the pirate navy as a challenger! Kaido: "This kid is more resistant to fighting than me!" Garp: "This is the first time I encountered a fist that was harder than mine!" Hawkeye: "He is the best swordsman in the world!" Ron looked at the admiral who fell in front of him, and suddenly realized that he was so strong! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.