Nothing on Earth can kill people as quickly and efficiently as gunpowder.

If someone brings this up, those unfamiliar with warfare might retort that you could endlessly stab or cut someone with a spear or sword.

But this isn’t Japan; the sharpness and durability of weapons like spears and swords used in real battles are only on the level of a “kitchen knife,” and after stabbing two or three people, the blade is rendered dull.

“Even a masterpiece known as a ‘legendary sword’ can barely handle five people.”

Moreover, unless one has learned hand-to-hand combat to a certain degree, it’s …