nabeoishi 705, hakuji (kimetsu no yaiba), koyuki (blue archive), kimetsu no yaiba, highres, 1boy, 1girl, black background, black hair, blush, body markings, couple, cowboy shot, cropped vest, demon boy, facial mark, fang, fang out, hand on another's chin, hetero, holding another's wrist, japanese clothes, kimono, looking at another, midriff, muscular, muscular male, parted bangs, polka dot, polka dot kimono, short hair, updo, vest