Yeah, Vincent isn’t too surprised by Akemi’s reaction, nor Andrew’s short clipped one. Neither were telling Kaoru to never speak to them again, or anything, but those future conversations were… sure to be rough, to say the least.
He does shoot Hikaru an unamused look though at the ‘out of touch rich idiot’ comment in particular. “Uncalled for, Hikaru,” is all he verbalizes simply before the guy is out the door though, and truly that’s not his main concern right now anyways.
The laughter from Kaoru isn’t totally surprising to him, honestly, and Vincent doesn’t take it as explicitly malicious either. Hell, the first thing Vincent had done when he woke up in this place was laugh, after all. He does roll his eyes at what Kaoru actually says, though.

“Yes, I’m sure–You’re hardly a rabid animal, and I’m sure I can handle you regardless of if you have restraints or not, if the Wardens don’t want to. You’re not suddenly a different person than you were before we saw the projection. …Do you really WANT to stay restrained, or are you just actively trying to make yourself sound worse?”
Vincent glances at the Wardens, hoping they’ll actually undo the restraints anyways, but if not now he can see about getting on them about it later, at least.

“…Do you want me to carry you out instead, or something?” Vincent makes a gesture like he’s about to, watching for Kaoru’s reaction first, and at the very first sign of resistance puts his hands up instead placatingly. Alright, he backs off a bit, though doesn’t actually step away from being next to Kaoru. “Look, if you really think it’s necessary for when you find out what we saw, we can talk about it first if you want and see how you’re doing after. I just don’t think leaving you like that’s a good idea, in the long run. Wherever you wanna talk is fine.”