Attack On Titan 2 - Hajime Isayama

For one hundred years, what's left of mankind has lived in the city on earth, protected by walls that tower over ravenous giants known as the Titans. Untouched by the Titans for a century, humanity has become complacent. But Eren Jaeger has had had enough. While his fellow citizens are content to hide, Jaeger has the passion to take action to not only protect the city, but to learn what the Titans actually are. But on his first mission he comes face to face with horrors beyond his imagination and secrets from his own past that could shift the tides of war.