Sex?
According to British censors the final volume was given a higher rating than the rest of the series because it contained "moderate sex references" (http://www.bbfc.co.uk/website/Classified.nsf/c2fb077ba3f9b33980256b4f002da32c/b5864e80041dd0a1802570fc0020fc87?OpenDocument).
Only, I don't recall seeing or hearing anything relating to sex anywhere in the entire series except maybe for a tiny tiny amount of nudity in the credits which is common to the entire series.
Does the British version contain something that was cut out of the American version? or does this relate to a special feature/extra/trailer rather than part of the series itself. It'd really like to know as this one is bugging me.
The rest of the series was given a PG rating in Britain, which is lower than the PG-13 that volume 1 was given in the US. Which makes me wonder what exactly it was that prompted them to give the last volume a higher rating.
English Language Anime: Dub it, don't pervert it.