1girl, black_hair, building, cloud, cloudy_sky, dutch_angle, himeragi_yukina, holding, holding_polearm, holding_weapon, midriff, miniskirt, navel, orange_eyes, outdoors, plaid, plaid_skirt, pleated_skirt, polearm, saikai_academy_school_uniform, school_uniform, serafuku, skirt, sky, spear, strike_the_blood, tajima_yoshikazu, thighs, weapon