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, umbrella, white background