1boy, 4girls, absurdly long hair, ahoge, aiming, battle, black footwear, black hair, boots, chibi, closed eyes, coat, crossover, dual wielding, facing away, facing viewer, fire, firing, forehead, from behind, gameplay mechanics, gun, halo, health bar, holding, holding gun, holding weapon, jumping, knee boots, long hair, long sleeves, m320, multiple girls, one side up, parted bangs, pink hair, purple hair, railgun, red hair, school uniform, shoes, sidelocks, sig sauer, sig sauer mpx, slippers, sneakers, spirit, submachine gun, taking cover, two side up, very long hair, weapon, white coat, white footwear, wolf