Attack on Titan

Length: 25 episodes
Genre: Dark Fantasy / Post-Apocalyptic

Plot: Eren Jaeger lives in a peaceful town walled off from man-eating titans. But after a colossal titan breaks through the outer wall, chaos ensues. Eren joins the military in order to fight against the titans.

This story brings to light the pain of losing innocence and the illusion of peace. It presents issues of the current state of Japan's military, calling for forces to be at the ready1.