This time it’s Gun-Ota ga Mahou Sekai ni Tensei shitara, Gendai Heiki de Guntai Harem wo Tsukucchaimashita!? or When Gun-Nerd is Reincarnated to World of Magic, He established a Harem Army of Modern Weapons!?. I blame The Demon Queen for making me interested in this one, but it’s to late to turn back now!
Gun-Ota ga Mahou Sekai ni Tensei shitara, Gendai Heiki de Guntai Harem wo Tsukucchaimashita!?