I'm Selling Arms in Another World

Logan, who traveled through time to another world, was holding an encyclopedia of the weapons system, showed no sign of panic. The arrogant Knight's sharp sword turned into melted iron when face Logan's light sword. The noble mage tried his best to use the big fireball, but it was facing an RPG Gatling gun with over ten thousand bullets. All kinds of magic hot weapons crushed the different world. When a child held a gun in his hands, the martial artists lowered their arrogant heads.