Osaka has its own little Akihabara in Nipponbashi (also called den-den town) with endless shops with manga character paraphernalia, comic book stores and of course maid cafes!
I came across a lot of girls wearing maid uniforms handing out flyers to men to invite them to their cafes. In maid cafes, the waitresses dress up as maids and treat their customers as their masters. It’s supposed to feel more like in your own home rather than in a cafe.