Naruto: Signing In for Eternal Double Kamui

Crossing into the world of Naruto, Lin Chen becomes the abandoned orphan of the Uchiha clan, bullied by all. No parents, no bloodline talent, beaten and kicked by clan members since childhood, ignored and despised by the clan elders, even ninjas from other villages could casually mock him. The original owner even lost his life in a malicious bullying. In desperate straits, the Invincible Sign-In System suddenly binds!

First sign-in unlocked: Eternal Mangekyo Sharingan - Double Kamui!

Bonus: Perfect Divine Body, Infinite Chakra, all abilities zero consumption, no side effects, never blind!

From then on, the once trampled orphan transforms into the ceiling of the ninja world overnight! He doesn't look at the faces of Konoha's higher-ups, doesn't care about the Uchiha elders, doesn't indulge the schemes of Madara and Black Zetsu, and doesn't follow the original plot one bit! The Uchiha members who once bullied him, settle accounts on the spot; Root organization and Danzo who schemed against him in the shadows, directly annihilated; Madara and Black Zetsu who attempted to manipulate the ninja world, all crushed and killed; any of the Five Great Nations dare to provoke, directly swept aside and subdued! Save Nohara Rin from her fate of death, protect the Uchiha clan from annihilation, recruit the Akatsuki as his subordinate force, control the nine tailed beasts, break the Otsutsuki conspiracy, and establish a new order in the ninja world with absolute power! In this life, Lin Chen doesn't live for justice or fame, he lives only for himself. With the Eternal Kamui, he sweeps across the heavens and the earth, making the entire ninja world grovel at his feet!