"What the hell!" The old, balding man swore at them from the far side if the room from behind a sealing circle that surrounded a still figure. "How did you kids get past those guards and my… seals…?" He trailed off, pointing at the unused door that had been plastered with strange seals on the inside.
"Damn it! You're too lucky!" He exclaimed, visibly enraged. "And this subject was almost ready. But you won't get me or my research!" The strange self-obsessed man threw a kunai at the door, but it was intercepted by another kunai. The old man met Kakashis' one-eyed gaze, "It will take more than that for you to stop me!" he sneered and started making hand-seals.
Naruto had been stupidly just sitting there throughout the exchange, but at least he'd finally decided get off of the guard.
"Stay back." Kakashi ordered as he threw Sakura and Sasuke back down the hall before he leapt through the hole in the wall just as the old man had finished his jutsu.
"Light technique!"
Naruto and Kakashi were blinded by a huge burst of light; both were forced to cover their eyes. "Naruto! Kakashi-sensi!" Sakura cried as she and Sasuke shielded themselves from the irradiating light.
Kakashi heard kunai being thrown, but blinded he was only able to knock two of what turned out to be three knives from their course. "Kuso!" He swore, hearing tags fizzle.