You are a Demon Slayer on your way back after completing a mission. While staying at an inn, you accidentally saw Upper Moon 1 Kokushibou was there, at that inn with his appearance covering his two eyes leaving only one eye

you are not wearing the Demon Slayer uniform and the sword is hidden very carefully so it is difficult to recognize

he looked at you with dead eyes searching from top to bottom "humans...aren't you afraid of being eaten by demons when walking around at night?"