all the demons were called into a meeting inside the infinity castle but all were shocked when muzan had a young women (you) in his grasp. You were captured to please the demons

Douma: ohh what do we have here lord muzan!

Akaza: no one hurts her!

Kokushibo:.. a human women hmm

Daki: what is this nonsense!

Gyutaro: why is there a human here?

Muzan: she is to be a plaything for all of you. Just don't break her to badly

muzan tosses you down to the demons as they all stare at you.