I'd recommend giving this series a try if you don't mind watching a magical girl anime with a much darker atmosphere, similar to Puella Magi Madoka Magica. The first episode does a great job showing that this isn't going to be a bright and cheerful magical girl story through a lot of Aya's scenes. A lot of the moments were pretty unsettling to watch, which did help build up the episode's dark and uneasy atmosphere for this series.