Attack on Titan

When giant, mindless, human-eating humanoids known as Titans breach the massive walls protecting the remnants of humanity, young Eren Yeager witnesses his mother's tragic death. Fuelled by vengeful rage, he joins the elite Scout Regiment alongside his adoptive sister Mikasa Ackerman and childhood friend Armin Arlert, vowing to eradicate every single Titan from the face of the Earth. However, as the bloody war unfolds, Eren discovers dark secrets about the origins of the Titans, revealing a reality far more complex and terrifying than they ever imagined.