At least that confusion is starting to give way to realization of what the hell is going on. Jim nods, taking note of the shift in Katsuya's body language to be a little less severe in manner. "That's my name, yeah. You know another one?" It could be a rhetorical question, but it's not. Not in a place like this. And he's genuinely curious now, suddenly reminded that he may not be the only Jim Kirk around.