Sypnosis from Wikipedia: Attack on Titan (Japanese: 進撃の巨人 Hepburn: Shingeki no Kyojin, lit. "Attacking Titan") is a Japanese manga series written and illustrated by Hajime Isayama. The series began in Kodansha's Bessatsu Shōnen Magazine on September 9, 2009, and has been collected into 21 tankōbon volumes as of December 2016. It is set in a world where humanity lives in cities surrounded by enormous walls; a defense against the Titans, gigantic humanoids that eat humans seemingly without reason. The story initially centers on Eren Yeager, his adopted sister Mikasa Ackerman and childhood friend Armin Arlert, who join the military to fight the Titans after their home town is invaded and Eren's mother is eaten. However, as the story progresses and the truths about the Titans are slowly revealed to the reader, the narrative shifts to encompass Historia Reiss, squad leader Levi, Eren's father Grisha, and other supporting characters.
Season 2 just started a while ago and as someone who hasn't read the manga I'm quite shook after each episode. (I don't want to read the manga until the anime is airing because I enjoy being shooketh)
The newest episode (031 - Warrior) really came as a surprise for me.
SPOILER ALERT IF YOU HAVENT WATCHED IT!
I would have never guess Reiner and Berthold are the Armored Titan and the Colossal Titan respectively. Now that I watch the ending I realize the 3 children that are eating human organs surrounded by some kind of priests are probably Annie, Reiner and Berthold.
I wonder what their "hometown" as they mention is.
And where the heck did the beast titan disappear after crossing the wall and who was he???
So many questions for only 20min episodes.