I watched the whole thing all the way through... twice. It's badass!!
Fanfics.... hmmm I would say Revy+rock, Revy+Eda, Anyone+Janet(a.k.a. "Greenback Jane")
Then there are the freaky little twins ... (if your into Shota) it think its a girl and a boy but hey I could be wrong. In the anime they have tons of built in starts to some sweet side-stories, both adult and just everyday stuff.
I was thinking of doing a story on this myself.