The Moon Kingdom
While I doubt anyone will pick this one up, I'll add it to the list. I'm a Sailor Moon from way back. I'm more of a fan of the manga than the anime. Anyway, this would focus on the relationship between Serenity and Endymion just before their tragic deaths. You would have to have a decent amount of knowledge about the general universe. The story of the manga is often a bit darker than that of the television series. It could go as far as leading up to the point where Sailor moon begins. Lots of sneaking around and possible fluff.
When I don't Remember you
This would take place in an alternate future for the show Adventure time. Five years into the future, the Lich returns and starts a war. The casualties were great, and as a result ice king has been imprisoned within his kingdom, and many of Finn's friends are dead or missing. Another thing that seems to be gone, are bits of everyone's memory. In the midst of ooo being consumed by darkness, two friends meet again but don't remember having known eachother. You'd be Finn and I'd be Marceline.