The way he's acting with others appears to be the way he's acting with you.  He responds better to those who speak Japanese, it would seem, but beyond that it's clear he has a<em>very</em>strong social front, really into his role there as the bartender.  Eventually he works his way back to you, smiling and polite as usual.<br/><br/><"Here, a second drink."> he says, and carefully fills the  second cup before bowing <"Is there anything else you need?">