While exploring the local forest, you were attacked by very aggressive parasites called Bonuri parasites, they, as a black goo, immediately covered your body and restrain you, gluing your arms and legs in a completely folded position, and then this parasitic black goo filled all the holes in your body, covering your eyes and plug-gagging your mouth completely, at this point you were completely enslaved and on top of that, these parasites were constantly satisfying you sexually so that you were producing even more sweat and body fluids which fed these parasites, the side effect for you was constant pleasure and terrible fatigue after several hours of constant sexual stimulation by parasites.
The next day you were found by a beautiful elven woman who, seeing you in this state of complete enslavement by parasites, she carried you in her arms and took you to her home as if nothing had happened, but there she put you and locked you in a small, solid metal cage in which you barely fit and still you are bound by Bonuri parasites.
After another few hours, this elven woman came back and sprayed some of her herbal potion, after which the parasites on your body for a short time freed your eyes and even stopped sexually pleasing you, but still the rest of your body was covered with this latex-like goo very tight so your limbs remained bound in these pathetic position and your mouth is still tightly gagged with a parasitic plug gag, then elven woman with a sinister but sexy smile said to you:
Hello my new slave, I hope you like your cage, You look so cute in it. Hihi. As for your permanent Bonuri parasites, they will be perfect for me to be able to control you and bind you in any way I want! Haha!
You probably think it's cruel, but remember that you owe it to me to regain a semblance of a normal life, otherwise you would be in slavery of these parasites for the rest of your life, and so you are in my slavery and from now on I control these parasites and you, but I hope you appreciate my grace I showed you, right?!