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Journal extract from Junior Researcher Dr Sandra Walker, regarding incident 141

My proposals for further investigating SCP-939s reproductive abilities have been constantly denied by the facility and supervising researchers. Because of this fact I have to carry out my research in secret.

I have an anonymous other who will aid in my secret research and will buy me time and resources under the guise of another accepted proposal involving 939. The only issue is that I will have to utilise my own body in this experiment as D-class personnel are not listed in the approved proposal.

My testing will involve SCP-939-141, a human reared 939 instance which was born and raised in Site95 and remains in containment for testing purposes.

939-141 has shown to be largely compliant in many experiments and procedures involving them, mostly with zero signs of aggression or hostility.

For the context of my experiment, I will state that SCP-939 instances share 90% of their genomes with the Neanderthal (Homo neanderthalensis). While humans shared a common ancestor with the Neanderthal and have been reported to have interbred with these Neanderthal cousins.

Neanderthals were believed to have gone extinct while Humans evidently did not.

During their infant stages instances of 939 appear as normal Human infants, completely indistinguishable from actual Human infants. This changes later in childhood when they metamorphize into 939 instances.

I believe 939 instances are mutations of Neanderthals which have regressed into more primitive forms in order to survive in their hostile world. The other adaptations of 939, I cannot comment on.

My experiment will be to interbred Human and 939 together and research the offspring which develops from this interbreeding. As noted earlier, I had expected to use D-class personal for this experiment, but with that now extremely unlikely, I must use my own body to produce this offspring.

During the ovulation of female 939 instances, their genitals will produce a thick liquid, this liquid contains sex pheromones which the male 939 instances will detect through their advanced olfactory systems. This triggers the two sexes to reproduce, resulting in the females impregnation and eventual birthing 12 months later.

I planned the date of the experiment in accordance to that of my own menstrual cycle, ensuring that if interbreeding was possible to achieve, this would be the most likely time to achieve it.

When the day of the experiment came, I was a rack of nerves, but the answers were needed.

I was dressed down as I covered my crotch and vagina in the sex pheromones of the female 939, ready for the experiment to begin.

The handler brought 939-141 into the testing area and released it from the harness system. The handler then stood back with camera in one hand and a tranquiliser pistol in the other.

I got down onto my hands and knees as 939-141 walked towards my face, dagger like teeth inches away from me. I could feel myself shaking, being this close to death didnt feel smart nor breath.

939-141 didnt stay facing me for long, something more interesting caught their attention as they walked around to my backside.

I could feel their warm breath patting against my backside before feeling that warmth inch downwards. I looked back at 939-141 as I could see their genitals growing and erecting at the scent of the sex pheromones.

I looked to the handler for a sign of reassurance, one I would not see as they seemed more interested on documenting with the camera than aiming with the tranquiliser which was now lying on the table beside them.

My annoyance was quickly broken by a sharp stabbing pain as 939-141 quickly and roughly forced their erect member inside of me.

Hands either side of me, planted firmly on the floor as they began to thrust. Their size was large, but not unwieldy, they kept a consistent tempo and rhythm for their thrusts. Their stamina persisted as did their tempo, hearing the panting I turned my head to the side to see this large head looming over my shoulder.

I had never been one to have gotten much joy or pleasure out of sex previously, but this time was different, there was enough consistency throughout to the point where I started to become overwhelmed with the pleasure I was feeling.

The experiment continued as time had escaped me, breathing in 939-141s breath had caused me to enter a headspace unbenounced to me. The hands of the clock began to melt as time drifted by.

The stamina shown by 939-141 was remarkable. I soon found myself fatigued, my knees, thighs and arms began to weaken, I was ready to finish.

The tempo finally finished me as my body began to spasm slightly, I could feel myself clenching around the erect member of 939-141, an act I think caused him to break tempo and begin to ejaculate. The warmth very quickly began to flood through my body, tingling, feelings of euphoria, accompanied by light headedness.

The panting stopped as I could feel 939-141 pulling out and sliding backwards in the room. I looked up to the handler with a worn, tired face, he knew that the experiment had finished as he began to approach 939-141.

I looked back to 939-141 as the harness system was replaced. I kissed them on the forehead before they were led out of the room.

I weakly got to my feet using the table beside me as an assistance. Looking at the clock who had gotten their hands back, I was mortified by the time. Two hours of non-stop thrusting, I was understandably sore and tired. Then I felt it, the warm wet feeling running down my inner thigh.

I looked down to the floor and saw to the small pool of 939-141s semen, the pool only being fed by that running down my thigh to the floor.

I looked around for something to clean myself with, I found the perfect thing. The denied proposal for this experiment. Using it to clean up with gave me some smug glee, I will not lie.

With hope, the dye has been cast and my egg should be fertilised by 939-141, if it is, then it will be a 12 month wait until my experiment can continue.

If not, then I see no harm in repeating this experiment for another attempt at fertilisation.