Witch Hat Atelier volume 1 has one of the best covers I've seen so far on manga - and the content is every bit as good as the cover. It has the magical feel of a classic children's book, and the art is lovely. 

This is a magic school story with real heart. There's interesting world building, loveable main characters and the start of what will hopefully be a compelling plot. I'm looking forward to getting my hands on volume two.