Reincarnated into a fantasy realm, a former FPS enthusiast discovers an unexpected advantage—not legendary magic or mythical beasts, but a revolutionary shop system granting access to cutting-edge American military weaponry. While traditional isekai heroes wield devastating spells and summon powerful companions, this protagonist harnesses the raw power of modern firearms and tactical equipment to dominate his new world. Why cast fireballs when an M203 grenade launcher delivers superior devastation? Trade summoned beasts for UAV drones equipped with thermal imaging. Exchange ocean-splitting magic for weaponized technology that levels cities. In a world of cultivation and arcane power, advanced military arsenal becomes the ultimate advantage. Armed with unprecedented firepower, our protagonist carves his legend through tactical brilliance and overwhelming force. As he navigates this fantasy setting filled with danger and intrigue, he builds relationships with remarkable women drawn to his unique strength and confidence. Adventure awaits at every turn, blending slice-of-life moments with intense action sequences, all while redefining what it means to be overpowered in a magical world where bullets outmatch spells and modern warfare eclipses ancient enchantments.