Attack on Titan (2013)

Centuries after humanity has been driven to the brink of extinction, survivors hide behind enormous walls to protect themselves from colossal, flesh-eating Titans that roam the outside world. The daring Scouting Legion is humanity's last line of defense, venturing into the perilous unknown, though their missions often end in tragedy. Life within the city's confines creates a false sense of security, but that illusion is violently shattered. Faced with an unimaginable reality, the remaining residents must confront a chilling ultimatum: either fight to survive or become the Titans' next meal.