The results of your labwork
From Create Your Own Story
The old scientist puts you and Karin through several batteries of tests. You're given ultrasounds, CAT scans, and poked and prodded for more samples. Eventually you're left to wait for the test results and samples to be analyzed. You doze off with Karin on the surgical table while you wait to hear more from her grandfather. As you sleep you dream of being with the Masters again. You see flashes of strange things. Rituals, otherworldly creatures, orgies. You feel the pleasure of mating with the Masters as real as day.
As you have you give in to your oncoming orgasm, your eyes spring open and you find yourself on the table with Karin, who looks looks close to cumming in her sleep as well. You reach down and give her and hand, and she awakes as her cunt's muscles contract on your fingers. You lovingly kiss, and then hold each other, without saying a word. You peek up at the clock and notice it's been several hours since your tests were completed. About five minutes later the scientist enters the room, looking floored.
Your mind races as he explains to you both what has happened. Apparently, the ritual you unknowingly performed with Karin was one of transformation. It transformed the reproductive system of your bodies. All of your ova have been altered to contain another chromosome with the detected demonic DNA. The scientist, in combination with other demonologists more practiced in the supernatural arts, have determined that this demonic DNA, consisting of three-hundred and thirty three base pairs is designed to merge with another such chromosome, and then to reshape the other DNA in the resulting embryo to its own specifications. The rest of your reproductive system has been selectively modified as well, although the extent of those modifications are still unclear.
The other demonologists are convinced that this is part of the Prophecy of the Return of Zoion. The prophecy, the old man explains, involves summoning two Archdemons, using willing sacrifices. Through the ritual, their souls will be consumed in order to fuel the demonic transformations of their bodies into the forms of the two most prominent Archdemon disciples of Zoion, and the Archdemons themselves will then exit through the opened portal into these new forms. The Archdemons will then breed with two acolyte concubines, which causes the portal opened for them to expand, allowing Zoion to return. The concubines will then give birth to further demons, and then breed with their Archdemon masters time and time again to expand the portal into a gaping rift, allowing demonic energy and entities to enter our world all while birthing new demonic masters to take further concubines.
This all sounds delightful, if rather insane, to you, but the next part even moreso. He explains that the ritual Vladimir, your cult's leader, has been planning, is essentially the same as this ritual. The only parts that differ are that Vladimir seems to be attempting to pull out a single random Archdemon, not two specific ones, and that the portal in Vladimir's ritual won't be stabilized and will instead collapse soon after. He suggests that you usurp the ritual.