Fuyou Mai was reincarnated as the Marquis’s daughter from another world, Scarlett Northmark. Born into a world of guns and magic, what she picked up wasn’t a firearm or a magic wand, but a broom? “Why is this world so dirty?!” She faces off against the black haze/miasma (moyamoya-san) that pervades the world with a broom in hand. However, it seems this isn’t just ordinary dirt…? While I don’t plan to include explicit descriptions, there will be unfortunate deaths. According to the setting, guns will appear, but there will be very little emphasis on military elements. In particular, the protagonist won’t use guns.