His initial response is in Japanese and wouldn't be convincing even if Morrison understood. It's a reflex to instinctively deny he did anything even with all evidence to the contrary.

Has it really been six hours? He hasn't made much progress since then if that's the case. But that does explain why he feels like utter shit, probably should have had something to eat and drink at some point after getting back. But he'd been too focused on trying to fix this issue before anyone noticed. Before he had to admit he failed at something, that he was fallible even as a robot.

Very slowly and with small jerky motions he brings his hands forward, as if his arms are attached to marionette strings and he's trying to move them with just the sheer force of his mind and not the muscles and cybernetics that power them.

Both hands come forward, but only one is still attached. In his flesh and blood hand he's holding the fingers from the other, wires and sharp bits of metal poking out of what's left of the palm of his cybernetic hand.

"I was fixing this." For the past six hours apparently.