Even the strongest of will have their limit

Just the thought of going back there was like a nightmare to the busty blonde. She wasn't even sure if she could recover. Any thoughts of her life being Onyx were fuzzy, almost like a dream. Looking up at Onyx, Karen finally understood what the two girls did. Onyx. She was better than her. Onyx was just better. It's only right to be under someone who is better than you. It is only natural.

The blonde leaned her chest forward and placed her head on the floor facedown and stuck up her ass, her curvy naked body on display

"I submit Mistress Onyx. I am your property to do with as you wish. I am nothing but your big tittied slut who will do as you command in the hopes of orgasm"

Onyx smirked. Her patience had paid off. The all powerful Power Girl was finally her little bitch. But there is a slim chance this could be a trick so Onyx would have to be sure. She extended her left foot out in front of Power Girl.

"Kiss my boot. Clean it with your tongue and I will accept your loyalty pet"

With no hesitation Karen did as ordered. She lifted her head and ran her tongue across Onyx's boot, kissing and cleaning it as the dominatrix watched on with a devious smirk. Power Girl was her's and this city would bend to her will.