This Navy Is Obviously Super Powerful but Too Stable.

Yi Yan accidentally traveled to the world of One Piece and obtained a system with the ability to crush magic from Fairy Tail's strongest wizard, Gildarts. With such a start as Tianhu, when the system thought that the host would do something big, Yi Yan chose to develop in a humble way, and once it developed, it took ten years. Bigmom: "Don't let me catch that brat, or I will definitely eat him!" Kaido: "Do you think I won't dare to come here if I hide at the Navy Headquarters?! You brat! Come out and challenge me!!" Whitebeard: "Is this kid... Too steady?" Red hair: "..." System: "You are too cowardly. If you could kill the host, you would have been killed by me 100 times!" Yi Yan: "I'm not a coward, I'm steady!" "My life motto is, if you can win by lying down, never carry!" "You may make money if you are brave, but you will never lose if you are prudent!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.