[She's right on the money - Katsuki's tone may be sarcastic and scathing, but it's not threatening. One can tell when he's truly, sincerely angry, and shockingly? It's when he's calm, quiet, and not as bombastic and loud like he normally is that he's at his worst, and people should actually feel uneasy. Right now he's just shooting the shit - being a bit of a sassy jerk without any bite...ish. Nothing to break skin, anyway, to complete the metaphor.

His brow lift up, curiously watching her expression shift and putting the pieces together. Alright, so she does have some semblance of survival instincts, just not...very good at employing them. It's better than nothing. Some people he's come across don't even have that much, and it's truly startling to think they've lasted as long as they have in any world. He says nothing, just files that bit of information away, in case it's necessary, or relevant, later on.]

Aa, or at least you should be wary of them. [He leans a little to the opposite side, clicking his tongue.] Most people don't always have your best interests in mind...but not trusting anyone can get you into deep shit, too.

[Hoo boy, does he understand that. Rowing his boat upstream was way easier once Katsuki allowed himself to be helped by others. Once he allowed himself to trust others.]