Board Thread:Episode Discussion/@comment-26512661-20200118161649/@comment-37471367-20200123182129

Addressing another guy’s reference to an Anime. TLDR, Attack on Titan has 19th century era humans hiding behind walls to protect them from giant man-eating humanoids called Titans. When a wall first gets breached, things get VERY ugly.

The obvious connection is that Mantle has a wall to protect it from Grimm, and once breached would get similar results, except I’ve pointed out it’s already breached.