Attack on Titans
Attack on Titan (Japanese: 進撃の巨人, Hepburn: Shingeki no Kyojin) is a Japanese dark fantasy anime television series adapted from the manga of the same name by Hajime Isayama that premiered on April 7, 2013. It has aired on NHK General TV in Japan, and Aniplus Asia in various Asia-Pacific countries. In the United States and Canada, the series has streamed on Crunchyroll, Funimation, Amazon Prime Video, and Hulu.
In the first season, Eren trains as a soldier after his mother is killed by Titans. He discovers that he has the power to transform into a Titan, and, while the government struggles to put his power to use, a new Titan emerges within the walls to threaten humanity.
In the second season, the Survey Corps reel from the aftermath of battle and discover treachery from within, leading them to uncover some of the mysteries of the Titans.