Shingeki! Kyojin Chuugakkou

Great comedy spin off of the popular Attack on Titan. If you've seen Attack on Titan and have read the manga, This is a great break from the seriousness.
The story is a little hard to follow as the whole story changes somewhat. If you don't like a character in the original Attack on titan, This manga most likely will make you like them (Except Connie, No one likes Connie)