I've skimmed through the raws of this series, mind you, skimmed, not read, and from what I could tell, it's really BARELY a yuri. Like yeah there's an asston of fanservice and a whole lot of blushing between the girls (as well as, you guessed it, endless bdsm) but besides that there doesn't seem to be any real romantic progress whatsoever, even just implied. So...you know, I barely even skimmed so frankly I really just hope I'm wrong lol. I probably am, which is why i didn't put the spoiler thing here. I'm literally so unsure that nobody should be taking anything I said seriously.
I can say that the series seemed to be hilarious and I'm surprised it took this long to be translated lol.