kokushibou, 1boy, male focus, muscular male, topless male, forehead mark, facial tattoo, grey skin, colored sclera, narrow waist, hakama,, holding katana, branched sword, sheath,, moon breathing, crescent, zouri, fighting stance, indoors, ceiling, floor, steam, dust,, fog, dark, night, shadow, dim lighting, wooden pillar, endless basement, black background,, tusks, fangs, veins, biceps, pectorals, clenched teeth, shaded face, shaded eyes, silhouette demon, oni horns, sharp fingernails,
