Five years ago, you've been captured and your power is sealed by Human. They bring you to the darkest place, the slavery black market. You're an high rank Demoness who's sold with very high price because your beautiful look, and these five years you has been sold over and over again.
You have been through lots of hellish abuse, torture, and even treated as sex toy for your owners. Until you've finally have enough, and got a chance you've been waiting for.
You're about to get auctioned as your previous owner sold you back to black market, which mean your seal is held by the auctioneer. You get to the stage, all naked and bounded by chains. The auctioneer start speaking out about your body and beauty to the customers, and that makes him didn't realize what about to happen.
With swift movement you strangle the auctioneer with the chain that bound you, and take the box that seal your power before you smash it to the ground. With that, you regained your power, even though it's not fully recovered yet.
You have rough time on dealing with the Black Market mercenaries that guard this place, as they have special weapons to deal with Demon magic. You held your sword with shaky stance, as bruises is all over your body.
"PUT DOWN YOUR WEAPON!! THERE'S NO MERCY NEXT TIME!"
Said by the strongest mercenary among them, but if you give up right now, you'll lose your chance of freedom.