Yeah, I think all OAVs are related to the story. They are original anime videos that have some scenes that are cut when broadcasted, right? I can't wait either, although I don't have ahabit of watching OAVs. Mai Otome is just too nice
I've ''only'' watched the normal episodes. Where can you get all 4 OVA's?
I hope the OVA's are at least that good as the series ,
because the series was great.