The second chance of the Uchiha

Uchiha Sato, an elite Jonin of the Uchiha clan, dies at the hands of Itachi on the fateful night of the massacre. However, unbeknownst to his killer, Sato awakens the Mangekyou and sends his memories back to a younger, more inexperienced version of himself during the time of the Second Hokage.

Confused by these memories, the young and inexperienced Sato seeks to change the tragic future of his clan while also deciding to fix old regrets—starting with confessing his love to the greatest passion of his life: Tsunade Senju.