Sekai ni Hitotsu dake no Hana

To whoever reads this, please name your favorite pairing. Then think of the genre fantasy (or fantasy-ish). Choose a sub-genre/setting/short prompt that comes to your mind when you think of this pairing.

For example.
Sakumiya - fairies.

or: 
Matsumiya - reading minds.


I don't exactly know what I'm going to do with that, but... we'll see ^^