[Robin Williams]

have you been watching kabaneri of the fortress?
https://kissanime.to/Anime/Koutetsujou-no-Cabaneli

It's kind of like AoT with civilizations fortressed in, because there is these zombie type things that have taken the world over or some shit. And like they got train tracks which go through all these fortresses and everytime it gets to a new place it's covered in blood from all the kiabane they ran over and killed.

figured you prob like it if you haven't checked it out yet.