Explore her tight pussy.

She immediately freezes feeling your thumb press against her front entrance. All women within your harem have had tightening augments within their vaginal canal. These rings of tight muscles are added highlighting their status as concubines to you, their Master. All females serving in your house have one tight band installed at their entrance. This is a necessary precaution just in case you couple with a woman not designated within your breeding stock. Girls within your inner harem earn additional bands celebrating achievements or even promotions within your breeding ranks.

Yes, vaginal births are no longer a possibility in this system and menstrual cycles prove challenging, but the advantageous are too obvious to overlook. First, it ensures semen is retained within the woman for several days to maximize fertilization efficiency. Second, it provides a goal for your concubines to compete for and covet. This keeps them focused on infighting rather than questioning the system. Most importantly, it increases the pleasure for you! With unlimited sexual choices it only makes sense to maximize the chances that you choose vaginal sex over limitless options.

But it does make them work for it...

She throws her head skyward and arches her back. The little muscles of her body tense in anticipation. This is a natural reaction given the building pressure against her first vaginal ring, but counterproductive. She remembers her concubine training and begins to breath in a slow rhythmic pattern. The muscles within her shoulders and legs noticably relax. She gulps with effort and you can see her butt cheeks relax as well.

She reaches behind her legs and uses her fingers to pull her pussy lips as wide apart as she can manage. Still the resistance of the first vaginal ring persists. You increase the **** of your slick thumb against her pussy entrance.

"Ehhhh... Ehhh... Ehhhhhh... Ehh.... Ehhhhh..." She continues her self soothing panting. The sound of her struggling to admit you is music to your ears.

"COME ON GIRL," you gently encourage her, "YIELD TO YOUR MASTER!"

The sound of your voice stirs something within her. Her big blue eyes lock with yours over her shoulder. They convey a complete adoration of you and desire to please you. Further beneath that, they betray a fear that she won't measure up.

Your other hand gently flicks her still buzzing clit.

"AAAAAAaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaargh!"

Your thumb forces into her with an almost violent pop. She collapses onto your stomach and you feel her first vaginal ring spasm tightly around your thumb as she orgasms from the insertion. You press your thumb further against a second vaginal ring just beyond. Her strawberry flavored fluids will make this next one easier to penetrate. You time her contractions and plow your thumb past her second barrier. Both muscular rings now pulsate and squeeze your thumb through the remainder of her climax.

"Master... please... gi-give... me... your... cum......" her voice is weak from overwhelming stimulation.

Not quite recovered, her mouth makes helpless sucking motions at open air **** to latch with your cock. Mercifully, you grab a fistful of her hair and guide her back to your shaft. After several attempts she successfully latches and shoves the first several inches back into her mouth.

Her body has taken all that it can. Her vaginal rings close with a snap as you quickly withdraw your thumb.