What sort would you like? Long/short AU or regular. I can suggest some great authors for you: on AO3 - sunflower1343, sekhmetrising, eprime, kadzuki_fuchoin, setsuna24, green_destiny, ashida, amelita. There are just a few names to look at. FF.net has some of these and some are on LJ (my favourite story: http://sekhmetrising.livejournal.com/1132.html (Thieving Time)
There's a lot out there. If you don't mind dark, these two are my favorites. They're dark but ultimately happy/hopeful and true to the characters:
http://archiveofourown.org/works/402719/chapters/663818
http://archiveofourown.org/works/3928297/chapters/8798737
Any asami × akihito fanfic please!!