"Yes." That smile was entirely too innocent. "It's something called 'doujinshi'. There's worlds out there where we are apparently not only fictional, but there are entire animated and book series about our worlds. The book series is about a different kind of Amestris from ours, but it has its moments. And this doujinshi thing is something created by what's called 'fandom'. If you find the Nexus to be brain-breaky and bizarre, it's got nothing on this 'fandom' thing. Just so you're warned."
For the record, Riza is despising her mun with the burning passion of a thousand suns for making this comment have this icon.