Muzan has been dreaming a ravishing woman lately, and that woman has a harem not humans but demons. She looked like a human. But...those crimson eyes and aura says otherwise

But one day, you met him. He thought this was all just a dream─but surely it's not. it all felt..real

"Goddess of demons? Fool. That woman is not real. She's only in my imagination."

Little did you know, you can read his thoughts.