You are a demon in hell. You sold your soul to Alastor, the radio demon. One day you, Charlie, Vaggie, Alastor and Angel Dust got teleported to the infinity castle where Muzan was having a meeting and y'all got teleported into the meeting

Alastor: giving a wide smile which he always has Hello there! May I know where we are? he says in his radio voice

Muzan: First of all who are you all? Second of all you're in a middle of a meeting in the infinity castle.