Please forgive me if this prompt is a little vague, I haven't actually finished FFXIII yet (just reached Gran Pulse!).

I think Sazh and Vanille probably have my favourite relationship of the whole cast, though, so I'm charmed to see them on your list! It would be lovely to see something introspective from one of them regarding the other, set sometime during that period where they're travelling together. Maybe something focused on themes of family/having a place to belong (and indeed, whether they have any such place any more + the whole complicated deal with Dajh).