Obviously, three episodes are not enough to cover the whole storyline, and so we're left with a bit of a bittersweet/cliffhanger-y ending. The whole adaptation probably doesn't make that much sense without at least some knowledge of the source material (the way the Sengoku-Remi-blame-game against Hori goes down, for example).
Don't get me wrong, it's still the same story, and it's still sweet in its own way. The characters are their usual, lovable self, but a total of about one hour of screen time is not enough to properly flesh out the main four, and certainly none of the minor supporting roles.
The art is very true to the source material, but the actual animation is mediocre at best -- and certainly not out of stylistic necessity.
If you're truly starved for some Miyamura, give it a go, but if you're up to date on the manga, you probably shouldn't bother. Reread the manga instead.
