It's not another generic slice of life
I'm not going to lie, when I first saw some pictures of this anime, along with a few clips of it, I thought "Yep, it's just another generic slice of life/school/comedy anime". Being generic isn't a bad thing, and that's actually why I had put it on my list of anime to watch, however, it not being generic made it all the more enjoyable.
Whilst we have a few quite generic characters, albeit in slightly altered roles; Kobeni being the "perfect" girl, Benio being the lesbian, and Mashiro being the tsundere, we also have some slightly more interesting characters and personalities for those already mentioned.
Although the plot between Hakuya and Kobeni isn't really fleshed out as much as it could be, and I think they could have detracted from Mashiro's UMA obsession to spend more time developing them. I think there was a very good progression in the story within the limit of 12 episodes.