That's true. There's nothing in the world better at killing humans than other humans, wouldn't you say?

[Swords, guns, bombs, drones -- like humanity is in a race to destroy itself as dispassionately and violently as possible. Not that Akechi cares one way or another, really.]

Would you like to learn? A tree branch can be formed into the right shape for a sword in a pinch, and even a blunt weapon is better than nothing at all.