It was not a threat. That suggests a possibility that the outcome might not take place.

[ Ratio goes, and he sits, one leg crossed over the other, leaning back and letting his arms mirror the pose. What he is expecting is, of course, some form of explanation, some understanding of what had happened. He had bid Aventurine farewell, had sent him off in his little fool's game, had witnessed it all from the large frames that everyone else had been forced to watch, and then he had... Waited. And he had waited further, with no notion of any possibility of hope.

Formerly dead man. So "Death" had come, for whatever it was worth.

He refuses to look at him, a little too aching and sour for it, irritation clouding his features as he forces himself to keep himself restrained, reigned. As clever as anger might be at times, a heady companion, now is not the time for it. Aventurine might be the subject, but he is not someone who ought to feel it without some form of rationing. It would do neither of them any good, not if he wishes to have his questions answers. ]

That is not a sufficient explanation.