1girl, black_hair, black_umbrella, breasts, closed_mouth, demon, diamond_(gemstone), fishnets, from_side, gem, genderswap, genderswap_(mtf), hair_ornament, holding, holding_umbrella, jewelry, kibutsuji_muzan, kimetsu_no_yaiba, kuroisekka, large_breasts, necklace, pearl_(gemstone), red_eyes, red_lips, simple_background, solo, umbrella, white_background