nabeoishi 705, hakuji (kimetsu no yaiba), koyuki (kimetsu no yaiba), kimetsu no yaiba, highres, 1boy, 1girl, abs, black hair, blush, body markings, couple, cowboy shot, cropped vest, demon boy, facial mark, hetero, holding hands, interlocked fingers, japanese clothes, kabedon, kimono, looking at another, looking at viewer, midriff, muscular, muscular male, parted lips, polka dot, polka dot kimono, short hair, updo, vest, white background