In all honesty, this anime does not have a crazy good story. However, the premise of the story, along with the badass exploits of our MC, kept me watching. A future civilization imbued with magic is like Academy City and the Anglican Church had a baby.
But enough of that. In all honesty, there were lots of cute girls. Forget a passable story, forget the somewhat forgettable but simultaneously likable characters. There were lots of cute girls. Kiss X Sis has twisted me into a state where incest in anime is all good if the sister is cute. And yep, the MC's sister is part of a large group of cute girls.
Nothing else besides the girls matters. Nothing.
Also, my review is pretty much useless.
I like cute girls.