Board Thread:Manga/@comment-5774380-20160908231942/@comment-27321453-20160909112127

Kman111 wrote: "It's called a photograph'."

So... did Grisha come from the future??? He came from outside the Walls where humans seem to possess more advanced technology than the walled people. Out there is not the future, it's the inside of the walled world that's the retro setup.