Additional tightening recommended.

"Aaaaaaaaaaaaargh...." you protest the uncomfortable fullness straining your vaginal ring.

You lift your head to watch the girl poking and proding at the stretched sphincter within the entrance of your folds. Your buzzing clit swelling from your hairless pubic mons blocks most of your view but you can make out her grimace. Something is wrong!

"Patient's seal is only 96% effective," she states for the audio log recording the procedure.

"What does that mean?" you ask over the sound of your clit.

"Nothing to worry about, girl," she replies, "we just need to tighten you further for a better fit with Master."

"Tighter?!" you moan. Your newly installed vaginal muscles already burn with the effort of accepting the girthy dildo. There is no way you can take more tightening!

The girl grabs a nearby medical instrument. It is shaped like a pen, but designed to emit some sort of laser.

"It is critical we get you tight enough for a water tight seal. We can't have any of Master's cum escaping your vagina until he decouples. Not to worry," she continues, "We can stimulate increased muscle tension with this."

You feel her fumbling within your folds testing the seal between the circumference of the shaft and your poor pussy opening.

"Slight sting here," she warns pressing the tool against your new entrance.

zzzzZZZZZZZZZzzzzzzzzzzzzzzzzZZZZZZZZZZZZZZZZZZZZZ!

"Yeeeeeeeooooooow!" you jump within your restraints at the sizzling sensation. You can feel your new muscles convulsing unnaturally under the stimulation of the tool.

zzzzzzzzzZZZZZZZZZZZZZZZZzzzzzzzzzzzzzzZZzZZZZZZZZZZZZZZZ!

You cry out again as she makes additional adjustments in other areas of your vaginal opening. Tears stream down the corner of your eyes as you are subjected to the stinging instrument.

"All done I think!" she says with a satisfied smile.

"Ughhhhhhhhh," you protest weakly. The impact of her adjustments is undeniable. Your insides are somehow clinging around the shaft even tighter than they were a few minutes ago. You attempt to slow your breathing and focus on your clit augment. Anything to distract you from the strain of your new vaginal sphincter.

"Let me take another look at you," she says.