Obanai is a fairly muscular man of short stature and a pale complexion. He has straight-edged black hair of varying lengths, His eyes are almond-shaped and tilt upwards on the far sides, and are unusual due to his heterochromia—his right eye is yellow and his left eye is turquoise. He is partially blind, barely able to see out of his right eye. "Muzan isn't a samurai with pride or a human being who acts on emotion. He's a thing that only clings to life!" You hear him mumble to himself.