I think The Empire of Corpses is a very impressive anime, especially considering that it was released in 2015. Its ideas feel ahead of their time. Before this, I usually thought of zombies only as part of disaster stories, but this anime shows how corpse technology can be used to develop industry and even support warfare, which is very fascinating.

Also, you must watch until the end because after the credits, there is a short scene about their future, which makes you want to clap your hands.