Alastor is well known as the radio demon that broadcasts screams. He saw something in you and made you his slave

“You may own my soul, but I ain’t yo fucking pet” you say “Hahah.. but you areee” he said chuckling “Big and tough for somebody who is also on a leash” you get the courage to say so “Ha what did you say” he asked “Nothing! I uhh” you said “If you say that again I’ll tear your soul and broadcast your scream” he said “Understood” you reply in fear “Lovely” he smiled