Warner Brothers is currently in negotiations for the film rights to Hajime Isayama’s "Attack on Titan." If the talks work out, David Heyman, who produced "Fantastic Beasts and Where to Find Them," is slated to helm the adaptation.
"Attack on Titan" takes place in a world where the last remnants of humanity live in cities surrounded by enormous walls that provide some protection against enormous, flesh-eating humanoids known as Titans. As the story proceeds, the human characters struggle to defeat the Titans and learn the truth about their origins.
Since debuting in 2009, the "Attack on Titan" manga has sold 60 million copies worldwide. However, it didn't find a wide audience until the anime premiered in 2013. That series was a blockbuster success, with fans all over the world, and its popularity in turn drove sales of the manga. However, Season 2 of the anime ran into a bit of a "Game of Thrones" problem. By the end of Season 1, the plot had nearly caught up to the manga. This meant that the creative team for the anime had to wait until there was enough story in the manga to sustain an entire second season. And so, nearly four years after the conclusion of Season 1, Season 2 will finally premiere in the US in spring of 2017.
"Attack on Titan" has already been adapted as a two-part feature film series in Japan. Warner Brothers' adaptation would reportedly be a remake of that series; no word yet on whether they will keep to the two-movie format or attempt to condense.