Things You Can't Get Back

As Tsunade and A escort Naruto and Killer Bee to the war, Tsunade questions of her faith in Naruto. She remembers a time before she met Naruto when she crossed paths with A. A was in need her medical talents to save a wounded subordinate. This encounter ultimately led up to Tsunade agreeing to help only if A could best her in an arm wrestling match. A wins using his speed to his advantage. After seeing the state of the patient, Tsunade requires that they tell her what had happened.