strike the blood, astarte (strike the blood), yyi, simple background, white background, 1girl, black legwear, blue bow, blue eyes, blue hair, blue neckwear, blue sailor collar, blue skirt, bow, bowtie, clavicle, female, full body, hair between eyes, kneeling, leaning forward, long hair, looking at viewer, miniskirt, pleated skirt, saikai academy uniform, sailor collar, school uniform, shiny, shiny hair, shirt, short sleeves, skirt, very long hair, white shirt