Well, it's basically yuri fanservice? Though not particularly explicit. I just mean fanservice in the sense that its for people who like seeing cute and innocent lesbian anime girls do cute and innocent lesbian anime things. You know, lots of blushing, staring longingly at fellow attractive anime girls, maybe some comments about their ample chests or lack thereof, all those cliches.
Side note: if you've seen the anime and was rooting for Tamao, well, her character is completely different in this one, and not for the better...
Also, for some actually good yuri, try Aoi Hana
or Maria-sama ga Miteru