Among Japan’s numerous fanboy subcultures, train nuts are generally considered to be the most mild mannered of the bunch. They don’t have the lascivious motivations of certain obsessive idol singer fans, nor does their hobby have the graphically violent images often associated with video games and anime produced for the most hardcore fans of those media.
Train fans are mostly content to quietly stand at the end of station platforms or along rural stretches of railway, waiting for a chance to quietly and politely snap a photo of rare engines and carriages. In many ways, their passion is comparable to nature photography, and rail fandom is a pretty allow-key affair, nine times out of ten.
That one time, though, watch out.