[Cetonis]

I only saw one ep, but it seems like it could be reasonably decent. A brief synopsis, basically spoils ep1:

The fox-girl in question was a long-time guardian of a line of Water priestesses, but they eventually got fed up with some sort of mischief she was causing and sealed her. Needless to say she holds a bit of a grudge for that, so when they next awaken her to protect the main character's little brother she only agrees for the sake of their mother, who was apparently the last priestess to be kind to her. After the immminent threat is handled, the elder wants to seal her back again, but main character guy (now the "head of family") naturally refuses, and it is agreed that fox-girl will travel with the siblings to continue protecting them.

I'm probably going to wait until it's finished and then marathon it; it seems like it'll be better that way, and I don't like to follow too many current series at the same time.