"The Survey Corps sets a cunning trap to capture the mysterious Abnormal Titan that broke through their ranks. As Armin tries to determine the grotesque creature's identity and purpose, scouts report Titans closing in on all sides! But they don't seem to be after the humans - instead they're targeting the Titan! Series Overview-Humanity has been devastated by the bizarre, giant humanoids known as the Titans. Little is known about where they came from or why they are bent on consuming humanity. Seemingly unintelligent, they have roamed the world killing off humankind for years. For the past century, what's left of mankind has hidden in a giant, three-walled city. People believe their 100-meter-high walls will protect them from the Titans, which are 10 to 20 meters tall. But the sudden appearance of of an immense Titan is about to change everything."
Hajime Isayama first published Attack on Titan in Bessatsu Sh nen Magazine in 2009. It became a sleeper hit and won the Kodansha Manga Award in sh nen category in 2011. This is his first manga."