I'm not much for the fic where any of the trio just suddenly goes off after a fight (or not, for whatever reason) and isn't heard from again for years until their sudden and dramatic return. It's just not a characterization I see for any of them. There's one WIP I'm watching that I find plausibly with two of them running off, but that was really the only one I had found thus far.
Until today. I just finished a delightful fic where Harry returns from a bit of an exile. I think it's well done and enjoy both the mystery and telling of the story.
It's a lovely H/Hr called
Bridges by lorien829 on portkey.
I know most of my flist are not H/Hr people, but if you enjoy them at all it was a fun little read.