1girl akagawa007 backpack bad_id bad_pixiv_id bag black_hair black_socks blazer blue_eyes cardigan_vest finger_on_trigger from_side gun hair_ornament hairclip highres holding holding_gun holding_weapon jacket kneehighs light_machine_gun looking_at_viewer machine_gun necktie open_mouth original pkm red_necktie school_uniform simple_background skirt smiley_face smoke_grenade socks solo sticker weapon white_background