[Telling Katsuki to be quiet is essentially the same thing as taking a sharp stick and poking a pissed off bear, but aside from some guessing based off of the first thirty seconds of interaction with him... she couldn't have known that. His face screws up even more in his rage, and the way that she straightens out and hoists that sword up doesn't help. All he sees is her squaring up to him.]

Quiet down or what, you gonna come at me half naked with that sword?! Try me! [A scoff, as Katsuki breaks that moment of intense eye contact, turning to put his attention back on the robot.

That's gone and dipped out on them while his back was turned, apparently. Fucking great. Incensed crimson eyes are right back on Paine, teeth baring as he snarls at her.]

Good going, shithead! I was about to get something when you decided to fuck it up by interrupting!