Antecedent

Sakura Haruno is brought in to be a test subject for a new form of medical ninjutsu that her master and current Hokage had created. Reversing time on an injury is all good and dandy until Sakura vanishes due to this jutsu; landing her in the Warring States Era. At first sight, he was intrigued by this new comer, but mistakes are made and now trust needs to be built for the future.