I just got vol. 5 of the AZUMANGA DAIOH animes, and there's a very brief scene at the beginning of the last episode on the disc that hints Tomo and Kagura might be Christians. The two have bowed their heads and are praying over their food at lunch time; however, it's immediately clear this is a competition between them to see who can say the prayer fastest.
The prayer is not specifically Christian, just a general "thanks for the food" sort of thing.
So, does anybody know if (a) either or both of them are supposed to be Christian? (b) do Buddhists prayer in this manner before eating? (c) is this just another one of their dumb contests and they're just going through the motions?