Challenge by: impureevilregal
I've always enjoyed polar opposites in just about anything, and seeing them react with each other, that's what this challenge is about. You can either do just one, or go into all the different categories or you could do a few select ones, it doesn't really matter. But for each point, you include both things in your fic/artwork somehow! Show how those polar opposites interact!
Now then, let's go take a little look at the categories, shall we?
The relationships:
I'm sure that there are thousands more so if you have any more ideas tell me and I can add them to the list.