This is one of the greatest shows I've ever seen, and it's only 7 episodes in!
It may seem like a standard "Magical Girl" show from the look of it, and even in the first episode or two, but this is so well crafted, so filled with subtle nuances, so LACKING IN FILLER, that it's just incredible. It also becomes apparent quite quickly that this is NOT just another "Magical Girl" show.
Anyone else who's seen it is free to discuss it here.
Anyone who hasn't should leave now and watch it.