I watched this anime cuz I got intrigued by it's story, but there's really some parts I didn't understand or remained as a mystery, like, does the witches really was originally a human and only became a witch because of the certain organization? Like what happened to Kuroha during her childhood, she was supposed to be dead, is she got saved because Chisato turned her into a witch? Why did they created witches in the first place? Maybe this question will get answered when I read the manga, but because this anime caused me much confusion (or maybe I'm just really slow? lol) I don't know instead of convincing me to read the manga, it doesn't motivate me to do so unlike the others that I feel like I must read the manga to give me more content and to satisfy me more. I don't think I'll read its manga anytime soon.
ps. pls respect my review, it's only my opinion, and yours might differ.