In the hit anime series Attack on Titan, what’s left of the world’s human population lives behind enormous stone walls that keep out zombie-like giants known as titans. These titans, which range from 3-60 meters tall, regenerate. They have only one vulnerable spot: the back of the neck. To kill a titan, you must get up high enough to strike the back of the neck and cut that part of the body away from the titan.
Human soldiers use compressed air jets known as 3d maneuver gear to get up high, then swords to hack away at a titan’s neck. These blades often get stuck in titan flesh, so it’s necessary to make the blades detachable. Soldiers typically carry 4 pairs of blades into battle. These snap in and out of handles with trigger pulls.
That’s the way that these swords work in the cartoon. Is it possible to make real ones? One YouTube user thinks so. He designed and milled battle-ready swords that function just like those in the television series.