Quote from SirGir
I second the Shakugan no Shana.
Zero no Tsukaima is like SnS' illegitimate child born of incest, so they are pretty much the same but SnS is more action-y, and ZnT is kinda got a few screws loose.
Just one warning: Don't watch season two of either of those series, they are just awful!
i can't believe they turned season 2 of shakugan no shana to a freaking harem. totally ruined the series and i was so looking forward to it