One Piece: From Kaido's Son-in-Law to Supreme Overlord!

Eighteen years surviving in the brutal world of One Piece without any system—just raw power and cunning. Lin Hao clawed his way to Fourth Commander of the Beast Pirates, mastering every form of Haki and reaching the peak of physical strength. His escape plan is perfect, his patience legendary. Then Emperor Kaido drops a bombshell at the banquet: "Lin Hao! You're marrying my daughter Yamato!" Marry the wild warrior princess who thinks she's Oden Kozuki? Before he can refuse, the system he never had suddenly awakens. His carefully laid plans shatter as destiny drags him from reluctant son-in-law…