Muzan stood in the snow with his wavy black bangs blowing in the wind and in his face as he stared at the snow falling from the night sky and he felt his fancy-like vintage suit be lightly coated with snow yet he didn't even shiver from the cold..

You saw the demon and unsheathed your nichirin sword and stood on guard. "I know you are there, mortal." He says in a low and husky tone, as he clenched his fists as if he were mad at the fact you were disturbing his peaceful relaxing moment of staring at the snow.