The Demon King who destroyed the strongest Cavalry Squad in the Sengoku Era.
The battle reversed all the concept of warfare until that point.
It was revolutionary innovative.
It takes time to reload and the recoil is very powerful.
Guns are not relatively useful in warfares.
Everybody thought that way.
"If that's the case, why not align large number of guns and shoot them in order?"
――And now, the demon king attained even more innovation for the gun.
Incidentally it was a very misleading name, but since it was done by rifling which involved pulling matchlock, it wasn't actually a Gatling Gun.