Kai gains entrance to the One Piece universe and obtains a god-tier avatar creation system that guarantees unwavering loyalty from his constructs. The avatar shop presents formidable options—[Reverse Technique], [Ultimate Balance], [Malevolent Shrine]—and Kai selects the legendary Ryomen Sukuna as his first creation. This decision sends shockwaves across the seas. An uncrowned sovereign emerges above the Four Emperors, and the pirate world fractures under his dominion. Ryomen Sukuna joins forces with era-defining powerhouses: the bloodthirsty prodigy Hunter Hisoka, the world's greatest swordmaster Yachiryu Unohana Retsu, and Admiral King, history's mightiest military force. The oceans tremble as unprecedented waves crash across all corners of existence. Usopp: How does Four Emperors harbor such a nightmare? This is terrifying! I need to escape! Katakuri: Hisoka, my strength has grown beyond your control! Redhead: Hawkeye, do not provoke her—survival itself becomes questionable! The Marines: In this age of chaos! We stand fortunate with Lord Admiral King, our strongest protector, whose legendary Ultimate Hellfire Burst Wave Motion Cannon remains unmatched in all the seas!!!