1girl, ahoge, black skirt, blue necktie, collared shirt, full body, gun, hair between eyes, halo, heterochromia, holding, holding gun, holding weapon, id card, kneehighs, long hair, long sleeves, looking ahead, necktie, pink hair, plaid, plaid skirt, pleated skirt, school uniform, shirt, shoes, shoulder strap, sidelocks, simple background, skirt, sneakers, socks, solo, squatting, taking cover, trigger discipline, weapon, white shirt, white socks