Does this face look like the face of an accomplished reasoner to you?

[Again, his smile isn't so much playful as it is worried. This is his "but I can't do that and you know it" face.]

If I believed reasoning with him would work, I would have tried. I saw Kaz storming off from talking to him. He didn't look happy. Unless Josh stole Nico, in which case holy shit what, then I've got to assume Kaz tried to reason with him and failed. That's the brother approach, the same one I'd use. May be time for a different one.

[Him joking around just a little is a carefully planted pin to prick Yulia's frustration bubble. While he thinks she really does need to smack some sense into the guy, there's no sense doing so while really angry. Then it would just be about her, not him.

Well, at the very least, some of the frustration would be vented at him, anyway.]