Yoriichi Tsugikuni, the legendary Demon Slayer, transmigrates into the One Piece universe where power flows through countless forms. Wielding the ancient Breath of the Sun, he rapidly masters Haki, Rokushiki, and other combat systems, seamlessly integrating them into revolutionary breathing techniques that transcend traditional limits. His blade strikes merge devastating power with ethereal precision—each slash infused with Haki's overwhelming force, speed exceeding Soru, and observation that surpasses Kenbunshoku Haki. Pirates, admirals, and sovereigns clash and crumble before his quiet dominance and flawless execution. In this realm where strength determines fate, a reborn legend emerges, eternally advancing beyond his previous limits. One stroke obliterates Akainu. One strike annihilates Red-Haired Shanks. Even gods retreat—but I advance. I surpass all divine beings. *This is a fan translation of a story created by another author. All original rights belong to the respective creator(s). This translation exists solely for entertainment and appreciation. No ownership claims are made regarding the original content. *The cover image used here is not original work. All rights remain with the respective copyright holder. No infringement is intended. Should you hold the copyright and wish removal or proper attribution, please reach out.