tonbidou, misaka imouto, fn herstal, toaru majutsu no index, toaru majutsu no index: old testament, 1girl, 5.56x45mm nato, ammunition, assault rifle, brown eyes, brown hair, bullpup, carbine cartridge, dmr cartridge, female focus, fn f2000, full body, gun, head-mounted display, intermediate cartridge, lmg cartridge, military cartridge, modular weapon system, rifle, rifle cartridge, school uniform, shell casing, solo, squatting, sweater vest, weapon