I'm a librarian who loves anime, manga, and reading a wide variety of genres.
This takes place prior to the original Attack on Titan series. Survey Corps squad leader Erwin recruits Levi, Isabel, and Furlan from the underground slums because he believes they have great potential. They trained themselves to use the 3D maneuvering gear that they stole, something that's difficult for many Survey Corps members to believe. Erwin also(show spoiler)
I'll probably continue on with this series just because of Levi, but so far this is kind of dull, and Levi and friends are a bit too amazing right from the get-go. Keep in mind, they
Isabel and Furlan practically have “cannon fodder” written on their foreheads – one of the drawbacks of setting a spinoff prior to the original series is that you know which characters don't carry over. It's possible that they just decide to quit the Survey Corps at some point, but, considering the Survey Corps' high mortality rate, it seems more likely that they'll die tragically. I'm going to guess that a good portion of this series will be devoted to showing how Erwin manages to thaw Levi and earn his undying loyalty, so staying interested in Isabel and Furlan is probably going to be a bit of a struggle for me.
This has much nicer (prettier?) looking artwork than the original series, while at the same time keeping the same character design style (other than big-eyed Isabel, who looks like a refugee from another series). The linework is cleaner and doesn't look constantly heavy and dark. So far, I like it.
(Original review posted on A Library Girl's Familiar Diversions.)