At first sight, Hayate appeared to be not in the best of health, as he had an unexplained chronic cough and eye bags. He is however
scheduled to be the proctor during the final rounds of the Chūnin Exams, and as such, oversees the preliminary matches that will decide who advances to the final round. During the battle between Neji and Hinata Hyūga after an enraged Neji prepares to attack Hinata with the intent of killing her, he along with the other jōnin present stop him from doing so.
Hayate attacks Baki.
After the preliminaries are completed and the participants are given a chance to train and recuperate, Hayate learns of Sunagakure and Otogakure's plans to invade Konoha overhearing the conversation of Baki and Kabuto Yakushi. Before he can escape to tell the Third Hokage what he had learned, he is sensed by the two and chased down. As he faces off with Baki, Hayate uses his Dance of the Crescent Moon technique on Baki, however the swing of his blade was too shallow and got stuck in his flak jacket.