Is this in the context of traveling there as a foreigner? I found that quite a few Japanese people were willing to come up and start a conversation with me, but now that I think of it, I didn't see much casual conversation between locals.
> Is this in the context of traveling there as a foreigner
I specifically said that no, it's not just me. I have seen and heard locals talking about this happening to them a lot. I'd say this happens even less likely as a foreigner because people will just strike a short conversation with you if they can barely speak English and that will stop there. Between locals it can go on for much longer.