“...tits.”

Lady Grace smirks and makes a “go on” gesture.

“Shove my face into your beautiful rack, please,” you beg. “I’ll lick and suck on your tits for as long as you want.”

She nods and then, with her usual quickness, grabs your head with one hand and presses your face tightly against her cleavage. It’s not quite a smother—you can get enough air, barely, to stay conscious—but you’re still very much motorboating your Mistress’s impressive rack.

“I believe I was promised some licking?” she prompts you.

With as much of a nod as her grip allows, you put your tongue to work. She lets out a pleased sigh as it slides up and down across her sensitive flesh.

For a few minutes, your vision is dominated by a faceful of titty as you do your best to please your Mistress. Every so often she shifts your head around so that you can get a better angle with your tongue, or start sucking enthusiastically on one of her nipples. Your hands reach up to fondle her boobs as her free one reaches down to alternate between jerking you off and fingering herself.

As your tongue circles around her nipple, she moans and rewards you with a few extra strokes of your rock-hard dick. “Aren’t you glad you submitted to me willingly? Is this not preferable to what I did to you before?”

She moves you again so that your face is buried in her cleavage, rendering you unable to answer with anything other than muffled grunts, but you have to admit she’s got a point.

This wouldn’t normally be enough to make either of you climax, but that’s what hands are for. Before too long, Lady Grace’s fingers give her that little extra push she needs to orgasm from your breast-worshipping, and with a gasp of delight she gushes hot cum onto your hard shaft.

“You’ve been such an obedient little slut for me,” Lady Grace says as she comes down from her orgasmic high. “I believe you deserve a little reward.”

Her hand grasps your cock for a final time, and with her own juices as lube, it takes her only moments to jerk you to completion. Ecstasy pulses through your body and ropes of jism splash onto the mat as she finishes you off.

“Be as attentive to your Mistress’s needs as you were just now, and that will be the first of many,” Lady Grace promises you.