I've enjoyed this series so far, though I've fallen a bit behind admittedly.
I don't see a lot of undertones either, aside from Elvira who is pretty blatant in terms of fanservice, it seems to be pretty straight-forward so far, with generally likable characters and good production values.
I also hold out some hope that Rickert won't be totally a bad guy, but it is hard telling this early on.
Overall a solid 8/10 series.