Attack on Titan Final Season THE FINAL CHAPTERS Special 2

Attack on Titan Final Season THE FINAL CHAPTERS Special 2 is also listed as Shingeki no Kyojin: The Final Season - Kanketsu-hen Kouhen on some trackers — same show, different title convention. It's a special across 1 episode out of MAPPA. It's finished airing, so the whole thing is watchable start to finish.

On the shelf it sits under Action, Drama, and Fantasy — worth knowing if you're comparing action anime specifically. Looking for something similar? Attack on Titan is the nearest match on the shelf right now.