Get Backers and Monochrome Factor. The owner are not the main character, but have some connection with supernatural. Maybe I define the genre wrong.
And I just remembered... wouldn't be Fairy Tail in this too?

I think the good in this genre is that you know where to go if you want to reach something, that you wouldn't the normal way.
If someone would say 'over the rainbow you can find your luck' that's something nobody belives to achieve. But if someone says just go to this bar and look for XY~... guess it makes it more real. ^.^