Naruto: Rebirth in an Unusual Alternate Reality

The MC wakes up to a start, remembering the memories of a man in a world where technology was flourishing and the man of the memories lead a dull meaningless existence. After a head-splitting few moments of the memories merging, Naruku Uzumaki is conflicted by the existence of memories from two lives.
"Onii-tan, aah yuu ohke?" says a cute voice bringing him out of his trance.
"Yeah Naru-chan. "

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A Spin on the shonen sensation anime Naruto, in an alternate reality where the memories of a previous life differ slightly from the events that take place in this reality.