Naruto: Shunshen Shisui's Younger Brother Is Me

[Naruto + no system + golden finger + no heroine + friendship + decisive killing] Yami was reborn into the world of Naruto due to an accident on his way to get off work, and became the younger brother of Uchiha Shisui. After spending six years of a carefree life, he was greatly stimulated by Shisui's suicide. Not to mention awakening the memory of the past life, it also directly opened the double Magatama Sharingan. Yami thought he would be able to soar to the sky from now on, but an unexplained illness plunged him into an endless abyss. Under the influence of his illness, the agreement he made with Shisui and the oath he had sworn could not be fulfilled. And it wasn't until six years later, on the night before the graduation exam, that things really turned around. Since then, after regaining his health, he has been working hard to become stronger, from taking revenge on the water to fighting the invasion of the Otsutsuki clan. In the end, he gradually became the true god of the ninja world.