The yelling he'd been braced for, ready for it to go its course until she ran out of ways to be angry and finally got to the punishment so he could escape somewhere to be alone for the rest of the night and properly lick his wounds. None of the questions really required a response, the confirmation already on paper, and he couldn't really deny that in the moment that yes, he might have killed Kin if Dominic hadn't intervened.
He startled at the bang, blinking at Shizuru nervously, trying to look away again until she demanded eye contact. It didn't seem right, making direct eye contact with authority, especially not when he was in trouble. Bucky bit his lips together, started to shake his head, stopped. "I don't know," he responded blankly, trying not to be outright defiant, but still having trouble comprehending exactly what had happened.