I Became the Brother-In-Law of Luffy's Ancestor

Ye Xiaolu traveled to the great maritime world 800 years ago and unexpectedly became the brother-in-law of Luffy's ancestor. The king of fantasy and nautical worlds, together with Luffy's ancestors, fight against the Celestial Dragons and explore the secrets of the era before the great voyage. How did Fishman Island get thrown 10,000 meters under the sea? Why does the redhead want to grab the devil fruit? What are the ancestors of the three generals? .................................................... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.