Naruto: From the Start, Awaken as an Arrancar and Subdue the Entire Akatsuki

After transmigrating as a Hollow in the world of Bleach, Uba spends a hundred years fighting in Hueco Mundo, devouring his way up from a lowly Hollow to a Vasto Lorde, then becoming an Arrancar and awakening his Resurrección, "Black-Winged Archfiend." He's powerful enough to crush Hanzo of the Salamander with one hand. The System forcibly starts a second-dimensional transmigration, dropping him right at the moment Hanzo cripples Nagato and Yahiko dies. As Hanzo raises his sickle to take Nagato's head, Uba descends from the sky. He stops the demigod's full-force attack with one finger. Ten times the usual number of Explosive Tags can't pierce his steel skin, and his Cero Obscuras bends Obito's Kamui Dimension out of shape. Hanzo is pinned to a boulder by a blue spear. Nagato drops to his knees on the spot. "Senior, please help us rebuild the Akatsuki." Uba turns to Obito. "Rin's death was planned by Madara himself. Are you sure you still want to serve him?" A year later, Uba is busy beating up the trio of Nagato, Konan, and Obito in the underground arena at Amegakure. Recruiting Sasori of the Red Sand is next, and Kakuzu is on the list. The System issues a new mission: Target: Konoha. Retrieve Obito's Sharingan. Uba pats the sword hilt on his shoulder. "Kakashi-sensei, let me borrow your eye. Obito's coming to get it himself."