Oh man, those were my RPing heyday. 
But the RP I'm doing now doesn't have tons to do with the anime itself. Hetalia doesn't have much of a plot anyway. Barely any plot, really. It's mostly kind of a few vignettes per episode. 
The RP is treated very much like OCs. You'd barely tell it had anything to do with the show. What I'm doing is really just about a family. One of those classic very nice traditional looking family that's actually pretty fucked up when you take a closer look.