One Piece: Rinnegan Is My Golden Finger Novel

Uchiha Chiga, once an anime-obsessed boy on Earth, awakens in the Naruto world as a member of the legendary Uchiha clan. A genius wielding knowledge of the original timeline, he fuses with Hashirama's cells and awakens the Rinnegan. But power attracts danger—Orochimaru betrays and kills him. Chiga's consciousness resurfaces in the One Piece universe, his Rinnegan intact yet transformed. Here it evolves into the Devil Fruit Devourer, an ability to absorb Devil Fruits and integrate their powers into his bloodline, adding magatama to his Rinnegan with each absorption. When twelve magatama are gathered, he will transcend into an Ōtsutsuki Sovereign—a being beyond mortal comprehension. With this ultimate power, he vows to return to the world that betrayed him, not for justice but dominion. He will reign across all worlds: the Shinobi realm, the pirate seas, and beyond.