Using that term against him is more than enough to make every muscle in his body tense, even if he had just used it himself. A low growl bubbles in the back of his throat before he's actually making himself be seen from his little burrow, far too golden eyes narrowing in Dio's direction.

He could act, he could, but there is just something holding him back from doing so. At least for another moment or two, to see if this is really worth it or not.

"You come here and speak as if you have any idea of how such an emotion could feel. Speak as if you have any idea of how a loss like that could feel to someone? No, I see my assumptions then were the same as they should remain now. I have given the benefit of the doubt time and time again and yet here you are, speaking as if you understand some sort of emotion that I sincerely, truly doubt you could ever comprehend." Maybe stop him, Jonathan, this is going to be anything but pretty.

"Even now it seems the form this place has given you matches your personality as well. Cold and inhuman. I will admit you are an intelligent sort, which is why it baffles me how you speak in such a matter without using your brain for a fraction of a second. Even if Jonathan will not, I would reduce you to nothing in a heartbeat if given have a reason to do so."

He isn't moving from his spot yet, at the very least, but it's very clear that he's ready to move at a second's notice.