Because it shall dwell on the back story of what happened before the emergence of the Titans and the fortress, it also becomes clear that Season 2 of “Attack on Titan” shall not be a direct sequel of Season 1, and shall actually deviate from its manga source material.
The only thing that “Attack on Titan” Season 2 may have as similarity with the manga series is that the Survey Corps will still kill those large Titans.
Reports have it that Season 2 of “Attack on Titan” might reveal the mystery of the Titan inside the wall and when it does unravel, the militia will eventually find out the true identity of the bigger enemy lurking within the walls.
Mangaka or author Hajime Isayama writes and draws the anime, which was first launched in 2009. The franchise has since branched out and evolved from there.
In fact, “Attack on Titan” now has four spin-off manga, two live-action films, one anime season released in 2013, and a spin-off anime series “Attack on Titan Junior High.”
While Isayama has yet to confirm the airing date of “Attack on Titan” Season 2, the reports are fairly consistent in saying that the TV series shall return to the small screen in the spring of 2017.