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Guns first show up in Ch 18. At 18, Gwen inherits a failing adventuring gear shop. With two siblings to take care of, he turns to his system for help. Choosing a crafting class to revitalize his business, he finds out he has to dungeon dive for materials. After hiring a mercenary to fight for him, Gwen crafts his way from being a nobody to being a nobody with semi-automatic weapons.