Out of all of the 3-5 minute shorts I've seen, and I've seen a good deal, this is one of my favorites. The characters are extremely cute, the dialogue is hilarious. It's very much worth your time. Monaka might have been the cutest girl in the season, and she's trapped in a tiny short! How sad! Also has some great moments for someone who's a huge fan of Kannagi such as myself, for whatever reason.
Of course you could consider the runtime of this series as a flaw, and in some sense I do as I'd love it if it was at least a ten minute series, but on the scale of 3-5 minute shorts this one is one of the best. If that's what you're looking for, as it sometimes is, here you go! On a silver platter! Enjoy!