saika 102, kimetsu no yaiba, highres, 1boy, 1girl, black hair, black jacket, black pants, black socks, border, breasts, butterfly hair ornament, butterfly print haori, demon slayer uniform, full body, greyscale, hair ornament, hakama, hakama pants, hand on another's cheek, hand on another's face, haori, hetero, jacket, japanese clothes, katana, looking at another, lower body, medium breasts, monochrome, no shoes, on one knee, pants, parted bangs, print haori, sidelocks, socks, standing, sword, updo, weapon, white background, white border