For those unfamiliar with Attack on Titan, it's about a bunch of Germans with web-slingers and swords killing giant naked people who are trying to eat them.
You got the premise terribly wrong. It is about German weird penis ninjas killing giant naked fleshy-mecha people using big razor blades. Also, homeschooling and a giant wall made of giants.
Swifter than eagles! Stronger than lions! More power than a locomotive! Able to leap tall buildings in a single bound! And they shall know no fear! Semper fi, do or don't!