Someone went to Japan, came across this manga, and brought it back, as far as I know. XD; I think people assumed it was a one-off in Japan as well (actually, at that time it's hard to say it wasn't - you couldn't really talk about a BL scene like you could in the 90s. There were m/m themes in shoujo, but I don't think anyone really tried to figure out the actual Japanese context, it was too foreign).

Hmm... well, keep me updated if you make a breakthrough. XD;