The Secret Origin of the Ultimate Tag Team!!

A and Tsunade stand in the way of the two jinchuriki trying to reach the front. Naruto pushes to break through, yet the Raikage matches him stride for stride even while he wears the Nine-Tails Chakra Mode. Tsunade points out the truth of it, that keeping pace with the swiftest ninja alive since the passing of Konoha's Yellow Flash is itself remarkable on Naruto's part. Though she holds the title of Hokage, she admits she cannot move freely against the wishes of the Allied Shinobi Forces.

Tsunade is stunned when A vows he would strike down both Naruto and B if forced to, settling on ending Naruto first because a flawless jinchuriki like his brother carries more value on the battlefield. As the Raikage lunges once more, B intercepts the blow with an arm reshaped into that of the Eight-Tails. A fist bump passes between them, and the moment carries the brothers back through their shared past.

Their recollection traces how B came to be counted as A's sibling, the countless missions they undertook side by side, the counsel A received from his cousin, that cousin's eventual death, and B's rise as the new host of the Eight-Tails. It closes on their meeting with a figure once hailed as the world's savior, Minato Namikaze, and the words he left with them. The episode draws on chapters 540 through 543 of the manga and aired in Japan on October 4, 2012.