A book popped up in my Amazon recommendations called Attack

[Vertical Inc]

A book popped up in my Amazon recommendations called Attack on Titan: The End of the World, with Vertical listed as the publisher. I can't find any details about it or the author online beyond the fact it has the same subtitle as the live action movie. Can you enlighten us as to what it is?

It is the novelized version of the Attack on Titan movie.

http://vertical-inc.tumblr.com/post/146995333106