Mara and her alien lover, Nyla, had been considering having a child for a long time. It had been up in the air for sometime which of their species that they would have.
A human child was of course Mara's preference but that largely left Nyla out of the loop while an ichantha child could involve them both in bringing it to term. Nyla was female and ichantha females laid eggs. More specifically, they laid eggs in a body cavity of a warm blooded host to incubate.
They were technically lesbian lovers though they regularly enjoyed sexual intercourse of a sort. Sex for ichantha was functional and is not particularly pleasurable. However, female ichantha formed social alliances with one another and helped each other to subdue their hosts for ovipositing. In addition, females also simply forced their ovipositors into a host to enjoy the feeling of it squirming as one of its orifices was being violated.
Mare and Nyla's attachment was quick strong with Mara as ally and host all rolled into one. She enjoyed Nyla's large organ being thrust into her and she squirmed in a very satisfying way as far as Nyla was concerned. However, the concept of having a large ova being injected into her vagina sort of scared Mara.
After some discussion Mara had finally agreed to be implanted with an egg. The breeding with a pre-sentient ichantha male was a simple matter, preparing Mara for implanting was not. Nyla was in the unusual position of being Mara's closest friend and being an organism that lusted to implant her as a host.
In the week before the egg became ready for ovipositing, Nyla gently solicited Mara's affection. The ichantha spent hours arousing her with its long tubular tongue buried into her vagina and anus. Then the day came for implantation.
Nyla fed the woman a sumptuous diner and spend the evening massaging her lover with her four warm, webbed, four fingered hands. As time progressed towards the implantation her massage became intensely intimate as she paid attention to Mara's breasts, anus and vagina.
While two hands played with Mara's labia, the other two spread her buttocks and the ichantha's tapered tongue slowly burrowed deep into the young woman's rectum. Like a hot, slippery worm it squirmed within her spasming anus that was impaled by the 4 cm thick organ.
Then Nyla grabbed Mara by the ankles as instinct outweighed intellect. She spread the woman's legs wide as she aggressively her took like any host. Forcing Mara's leg open as she leaned over the woman the human's buttocks were lifted upward bringing her genitalia opposite the ichantha's genital fold. Her four arms pinned the smaller woman who now trembled in her shadow excepting being oviposited as inevitable.
The ovipositor burst from Nyla's body and thrust itself mindlessly into Mara who jerked helplessly in her lover's embrace. The organ was it normal hot, moist self but it was in her vagina with a new intensity. It thrust and throbbed within her distended genitalia trying to force it way as deeply as possible up her.
Mara watched a large swelling distended Nyla genital cleft and slowly migrated down the ovipositor's canal towards her upturned pelvis. When it pressed against her vaginal opening she groaned as the ovipositor thrust into her with even greater intensity. Long slow rhythmic contractions began pumping the egg into her.
As she squirmed her vaginal orifice slowly surrendered to its fate as egg laying organ throbbed with increasingly faster and more powerful contractions. Finally, the ova passes into her body and deep into her vagina where it pressed against her cervix.
Nyla slowly returned to her faculties. Using the muscular ovipositor to hold the ova in Mara's body, she begins to withdraw it while carefully sliding a couple of fingers into her lover's vagina to take its place. The other three hands begin applying a special surgical clue to Mara's labia, taking care to avoid sealing her urethra, to prevent the egg's discharge.
She then begins to cuddle the woman comforting her. With time her vagina began to relax resigned to having the large ova buried within it. In two weeks the larval ichantha will hatch and its squirming in the woman's vagina will alert them to apply a enzymatic gel to the seal to release it from its human host.
Mare was actually quite pleased with having excepted her lover's ova as she playfully teased Nyla about whose baby, or larva, it really was. And no needed to knit this young one booties, ichantha brats were independent on emergence.