Sasuke's eyes followed his teacher's movements even as his feet continued to tread a nervous path in the carpet -- as soon as the last one was activated he nearly felt his knees buckle, doubling over instead to brace himself with a gasp:

"I fucked up, sensei," he said, less miserable than desperate. "I really fucked up -- I don't know how it happened, it wasn't even me, I -- it wasn't me, but it was me, they all saw me, they're --"

He wasn't being coherent, he could tell that much himself, but he could only replay the look on that child's face in his mind: the shocked fury, the blood on his own hands, the slow sinking awareness of where he was, what he'd done, the Konoha leaf still proudly, obviously emblazoned on his forehead.