The New Twosome!! (volume)

Synopsis
Kakashi, hoping to help Naruto become a better match for Sasuke during their next meeting, began to train him in creating a new attack. After discovering that Naruto has a natural affinity for wind-based attacks, Kakashi helped him hone the ability to control wind. To expedite this process, Kakashi had Naruto train with hundreds of shadow clones, allowing their collective knowledge to complete a year's worth of training in a few days. Meanwhile, two Akatsuki members, Hidan and Kakuzu, headed towards Konoha to further their organization's goal of obtaining all of the tailed beasts. Tsunade, determined to either capture or eliminate the pair, mobilized the Nijū Shōtai, a group of twenty squads of four ninja assigned to accomplish this very task, to find the two.