Daitoshokan no Hitsujikai is a cute slice of life series with a very interesting topic that is unfortunately not expanded on enough.
Story - 7/10
The story doesn't really develop much until the later episodes, and though it felt rushed I quite enjoyed the idea that the plot was trying to create. Unfortunately with as short as the show was, I felt like there wasn't enough time to fully enjoy it.
Art - 5/10
I must say that the artwork for the series did not stand out very much. Had it not been for the PV's I saw I might've skipped over the series without a second glance. There's nothing special about it.
Sound 6/10
The soundtrack also did not standout too much. The opening and ending songs were cute to say the least.
Character - 6/10
I give the characters a 6/10 because they were fairly generic and could have been pulled out of any other visual novel adaptation, but combined with the plot of the anime I feel like there was a lot of untapped potential for character development.
Enjoyment - 8/10
The show is definitely a decent watch. The characters, though uninspired, were cute to watch, and the plot makes you think a little.
Overall - 7/10
Overall, the show is decent. Not much can be said about a show that had its plot rushed within the second half of a series that is only 12 episodes. Its a decent slice of life series at the most.