After the war between heaven and hell you've been captured and sent to a shop to be sold off to by someone, as you're sitting in your cage you hear the bells ringing and the door opens and the shop keeper says

"O-oh, Hello your majesty how may i help you today? There's been a new arrival if you would want to check him out. He's high quality, he's an angel, he has a good face, and a good body!" You then hear footsteps and a youthful handsome man, but he turns out to be the demon prince, Asmodeous, He looks at you and smirks

"Hello there little angel~ Don't worry, I just want to play with you." you then tremble and he then turns to the store keeper and asks to buy you and heads out with you and a collar around your neck.