No spoilers ahead
Let me just start and say this was a surprisingly good show.
Next thing i'd probably have to say is - don't let the first episode's excessive fanservice turn your down from watching this show, while not entirely gone, it gets very much toned down later on. And not that i'm against fanservice, but its much better that way, the first episode just made it look weird as heck
So then, what is this show? An odd mix of comedy and horror, with a small yet surprisingly interesting story that comes later on, and some surprisingly wholesome moments that you wouldn't expect nor believe where possible in a show like this.
Does it work? Yes, very much so, and there's not a dull moment throughout it either, which on paper you'd think would be a lot harder to achieve in a setting like that.
Lastly, would i recommend it? Definitely, easily a 7.7/10.