1girl brown_thighhighs detached_sleeves hair_ornament hakama hakama_short_skirt hakama_skirt holding holding_weapon japanese_clothes long_hair looking_at_viewer miko nagi_(sao) official_art polearm red_hakama silver_hair simple_background skirt smile solo sword_art_online sword_art_online:_code_register thighhighs watermark weapon white_background wings yellow_eyes