namamo nanase, gretel (black lagoon), nagato yuki, black lagoon, suzumiya haruhi no yuuutsu, silver hair, 1girl, black & white, brown eyes, browning automatic rifle, casing ejection, cosplay, female focus, gradient background, gretel (black lagoon) (cosplay), gun, light machine gun, m1918 bar, machine gun, parody, patterned legwear, rifle, shell casing, smoke, smoking barrel, solo, striped clothes, striped thighhighs, thighhighs, two-tone stripes, weapon