Reborn from the mundane life of an anime enthusiast on Earth, Uchiha Chiga finds himself thrust into Naruto's savage battlefields as a member of the legendary Uchiha clan. Possessing unparalleled intellect and the advantage of foreknowledge, this prodigy-turned-monster orchestrates a perilous gamble: merging Hashirama's genetic material to awaken the coveted Rinnegan. His ascent proves catastrophic. A ruthless ambush orchestrated by Orochimaru leaves him slain—a sacrifice deemed unworthy even as a test subject. Yet death grants no mercy. Consciousness returns under unfamiliar skies where pirates reign supreme and Devil Fruits grant impossible power—the One Piece realm. His Rinnegan persists, but transformed. Evolution has unlocked a phenomenon unprecedented across dimensions: the Devil Fruit Devourer, a transcendent ability permitting him to consume Devil Fruit essence and permanently integrate their might into his very bloodline. Each absorption births a new magatama within his Rinnegan's sacred geometry—one, three, six, twelve. Twelve magatama herald the resurrection of legend itself, yet not as mere shinobi nor mortal warrior, but as the apex being of mythology—an Ōtsutsuki Sovereign commanding dominion itself. The worlds that discarded him await reckoning. "Shinobi desperately pursue strength. Pirates sacrifice everything for liberation. But I shall reign supreme across all existence." The Shinobi World bows. The Pirate Seas yield. The Multiverse trembles. Before this Monarch's infinite gaze, no realm remains beyond reach.