/jp/ - Otaku Culture

- references to Kitachinchi station, as it sounds similar to Homashinchi
- stealth Majiresu photos, where his face is hidden in an otherwise normal photo
- abstract images, in a similar vein to that of loss edits on /v/
- A guy from Pink Company/ネタ具現化 who became known as Kageresu for imitating Majiresu at several events, and poked fun at for trying to capitalize off of the meme's popularity.

And so on...

I doubt that anyone on /jp/ other than me will be able to explain this meme.

Hell, even a good chunk of the people who post in those threads on the Touhou board probably don't even know the origin of this meme.