Well damn, this brings me back! In a weird twist of events, I knew about Chibi Maruko-chan doujin scene before I knew about, well, Chibi Maruko-chan; an artist I followed on Twitter got really into that stuff, and I ended up checking out a lot of the accounts they retweeted while attempting to figure out what was that about (in a true Twitter artist fashion, most of them didn't say what show they made fanart of, assuming people would just know, plus I knew Japanese even less than I do now). Later on I kept an eye on some of them just because I liked the art. I remember seeing this artist a lot, though I'm not sure if I saw anything from this particular doujin (doesn't help those people liked drawing festivals a damn lot).
Uh... Sorry for the rambling, thanks for the throwback.