You should go into tourism. With taglines like "Osaka: Like a Japanese Bristol!" it'd become massively popular in no time. But... yeah, I'll be there for about three days and all I've got is Osaka Castle and Universal Studios Japan, so any other suggestions would be great!
I have.
How long you going there for? It isn't a city like Toyko, more like Bristol if you know what I mean. Really peaceful and royal family lives there. Markets and such are really cool.