Naruto watched your battle go on. At first the fight started out mild due to it being the first fight of the chunin exams and the crowd and young ninjas here to take the exams were just warming up. He watched as the fight heated up and at the peak of the battle when your chakra should have run out it mysteriously didn't. His eyebrows furrowed. While you opponent had signs of chakra running out strangely you haven't even broken a sweat.

"There is no way they improved that quickly." He mumbled mostly to himself. He got his confirmation when you suddenly launch your opponent across the arena. He stood up from his chair and walked down to the arena.

Before the referee could declare you the winner he stepped in. "Stop. Wait a moment." He grabbed your wrist and pulled the sleeves of you jacket down looking for some kind of chakra output bracelet. He knew what they looked like but didn't think anyone was stupid enough to use them during an important exam like this one.