1girl, ass, back, bare_shoulders, bikini, black_eyes, black_hair, blue_sky, blush, breasts, butterfly_hair_ornament, cloud, cloudy_sky, from_behind, gradient_hair, grey_bikini, hair_ornament, kimetsu_no_yaiba, kochou_shinobu, koohiitei_shinbo, large_breasts, looking_back, medium_hair, multicolored_hair, outdoors, parted_lips, purple_hair, sitting, sky, smile, solo, swimsuit, two-tone_hair