niku (ni23ku), kochou shinobu, tomioka giyuu, kimetsu no yaiba, highres, 1boy, 1girl, black hair, black jacket, black pants, butterfly hair ornament, demon slayer uniform, fingernails, hair ornament, haori, hetero, holding hands, indoors, jacket, japanese clothes, long hair, low twintails, multicolored hair, pants, parted lips, print haori, profile, purple hair, spiked hair, teeth, twintails, two-tone hair