1girl androgynous battle black_footwear black_hair black_shirt black_shorts blue_sky boots building cloud cracked_skin day decapitation facing_away from_behind full_body highres holding holding_sword holding_weapon knee_boots layered_shirt long_sleeves obishima_yukari outdoors outstretched_arms power_lines road scabbard severed_head sheath shirt shoe_soles short_hair shorts sky solo speed_lines squatting standing sword umi_meteo unsheathed upshirt utility_pole weapon white_shirt world_trigger yuba_squad's_uniform