I personally liked anime prequel for Ga-Rei series more.
Don't let Madoka cover deceive you. This series are anything but childish, especially once you get pass 3rd episodes since that's where things really start to get grim.
A lot of people me included thought it was a children show and then all of us were proven wrong. Characters actually die here and atmosphere is dark.
Hope Ghost Hunt and Hundred stories will be of your liking
