[Law hugs back, with no hesitation. Rosinante might not be Cora-san, exactly, just like he's not exactly this one's Law, but, so what? He's a man who'd do all the things Cora-san's done, isn't he? So. No hesitation in the hug.

And, from all he's said, he has many, many problems, of what kind, Law's not sure, but--]

Rosinante. Listen. If you're ever in trouble, call me and I'll be there. I swear. So, promise me.

[Of course, Law doesn't say what kind of trouble, so Rosinante, being who he is, can probably be in trouble and then say it wasn't really trouble, but Law hasn't thought of that yet.]