I've read about nampa. Is that something realistically achievable by a short term transient who's only in Tokyo for a few days at a time? I'm not particularly good at approaching random strangers in public and striking up a conversation.
I'd have to agree with lolicon on the picking up strangers part.
granted, i'm a japanese american who just so happens not to speak fluent japanese so i dont get looks like all you caucasion folk AND i cant communicate