[There's a lot to get to know. He's got jokes! Klavier's laugh does help to ease the tension on his end as well. He does keep in mind that Klavier is someone who studied under Constance Courte, and who helped Apollo to find the truth several times, even against his own brother.

But his expression tightens as he glances towards the bottle of nail polish.]

I noticed. [He says that a little more curtly as he remembers that nail polish, which was used to almost kill a young girl. But he knows he can't hold that against Klavier (...and luckily the brothers look different enough that Phoenix doesn't suspect the possibility of him being Kristoph in disguise, so he soon adds in a more sympathetic tone.]

...I guess it's a little too late to warn you that the people in charge of this place have a cruel sense of humor. [He does take a closer look at the bottle regardless, trying in vain to find any clues from it.]