Biochemical experimental animal sex

"What do you want with me?"

Although he had successfully infiltrated the enemy's secret base as a spy, he was unfortunately captured during an operation. After being tortured and forced to confess, the male spy was led into a dark room, where he shouted loudly into the darkness.

"You have no more valuable intelligence to provide. Now you are just experimental material for us."

A voice came from somewhere in the room.

"Experimental material?"

"Yes, that's why you infiltrated our base. Now we'll make you the testing ground for our secret weapon."

As the sarcastic voice disappeared, a door in the corner of the room opened.

"Plop, plop," accompanied by the sound of something slippery being dragged on the ground, the creature drew closer.

"Let me introduce you. The one coming towards you now is what we call Experimental Life Form No. 8."

In the darkness, I could vaguely see its shape; it looked like a giant octopus with many tentacles.

"The prototype of that thing is a creature with an interesting reproductive ability. Originally, it was hermaphroditic and could form its own fertilized eggs. However, because it lacked the organs to nurture the fertilized eggs, it had to place its fertilized eggs into the uterus of another creature, where they would grow inside that creature's body. Even more interestingly, if the creature it had didn't have a uterus, it would modify that creature's body, forcibly forming a uterus within it." "

Such a creature couldn't possibly exist in this world," I retorted.

"It does exist, and what's in front of you is one. Moreover, we've modified this creature so that it can be used on humans. However, this is only theoretical; it hasn't been tested. You're really lucky."

"Could it be...?"

Indeed, it was mentioned when accepting this mission that the enemy was currently conducting research on biological weapons. Thinking of this, the male spy felt terrified of what was about to happen.

"It seems you understand what's going to happen. Then please enjoy it."

As soon as the words were spoken, tentacles wrapped around the male spy's body.

"Ugh!"

The tentacles were larger than the man's body and extremely sensitive. In an instant, the man was enveloped by the tentacles. He struggled violently, but the tentacles were incredibly strong and elastic. The man couldn't move at all. The tentacles writhed all over his body. At the same time, a mucous-like substance was constantly secreted from the tips of the tentacles, and he could feel the mucous membrane seeping into his entire body.

"Ugh, ah,"

the muscles touched by the mucous membrane began to spasm intensely.

"Let's start with changes in the body."

The tentacles that had wrapped around his body gradually converged between his groin, finally gathering on his penis, and began to move irregularly. The sensation of his penis being wrapped by the smooth tentacles was something he had never felt before.

Normally, he should feel pleasure now. But the man's penis reacted in the opposite way—it gradually shrank!

"No, impossible..."

"You seem quite surprised. A man's genitals are useless to it. So, like this, remove the male genitals and turn it into a female organ." As

soon as he finished speaking, the man's penis completely disappeared. At the same time, the hair on his chest and the hair on his legs also fell out.

Then the tentacles began to wrap around his chest.

Then, a clear liquid began to seep from the tips of the tentacles, and soon the man's chest was covered in it.

"In, in."

The man felt the clear liquid seeping into his chest. Not only did he feel it, but outwardly, his chest gradually swelled up until it was too large for two hands to cover.

The tentacles once again moved towards the man's groin.

"No. Don't come in!"

The tentacles continued to push deeper into the man's groin, where his penis was no longer there. As they entered, he could feel them expanding inside him.

"Ah."

Just like with his chest, he could feel the tips of the tentacles constantly secreting mucus. The mucus gathered inside him, eventually forming something.

"It seems the body modification is complete."

Now, this body, which used to be a man's, no longer showed any male characteristics.

It looked like the body of a woman around 20 years old.

"Now that the body has become a woman, I should be able to assist it in reproduction."

"Don't joke around."

The male spy, now a woman, struggled desperately, trying to break free from the tentacles.

"Hmph, just like other creatures, humans can't accept becoming female."

"Nonsense, of course."

"With you moving around like that, the implantation of the fertilized egg might not go smoothly. But they knew this would happen, so they have ways to deal with it. Don't waste your energy."

Just as he was about to say something, the male spy, now a woman, had his mouth blocked by tentacles.

"Ugh, ugh,"

liquid was forcibly poured into his mouth. Immediately, he felt his body begin to heat up.

"This is a kind of aphrodisiac. After drinking it, you won't think about anything except reproduction."

Just as he said. My body grew hotter and hotter, and I didn't think about anything except sex. That was the feeling I experienced when I was still a man, but now my body's reaction was completely different. The penis that used to grow larger when my libido was high was gone. In its place was a deep heat inside my body, as if it wanted something. Not only my groin, but my breasts, which were wrapped by tentacles, were also constantly getting hot and swollen, and their size had increased considerably. At its tip, the nipple swelled and hardened, as if being pulled by transparent ropes.

"I want it, I want it..."

The woman spread her legs and thrust her hips forward.

"Ah ha,"

the tentacle reached back between her thighs.

Accompanied by "plop, plop" sounds, the tentacle moved back and forth between the woman's thighs.

"Good, so good."

This was the first time she had experienced this. This was the first time she had felt pleasure from something being inserted into her body.

Unlike a man's penis, the tentacle could freely change its shape, clinging tightly to the woman's genitals. The cervix, vaginal walls, and clitoris were all intensely stimulated.

"Ha. Ha..."

Not only its shape, but its movement was also something a human penis could not simulate. It tumbled inside her, sometimes expanding, sometimes shrinking, stimulating all the nerves in her genitals in various ways.

Gradually, something different from the tentacle's mucus flowed from the woman's vaginal opening.

The greedy movement of the tentacle was not limited to the vaginal opening.

"Ah, there it is..."

A tentacle advanced towards my anus, the slimy tentacle ignoring the resistance of my anus and going all the way in.

The tentacle churned inside me while stimulating that sensitive entrance. It stimulated my genitals from different angles through the thin walls of my anus.

"More, I want more..."

As if in response, several tentacles reached for the woman's breasts.

I had expected them to wrap around her swollen breasts, but instead, the thin tips of the tentacles pierced her nipples. Her

breasts, already a C-cup, swelled even more. And that wasn't all.

"Ah, so good."

Her chest was covered in mucus, which further altered her breasts after absorbing it.

"Sizzle,"

as the tentacles withdrew from her nipples, breast milk overflowed. For tentacles that viewed their victims as reproductive tools, this was purely instinctive.

Breasts, vagina, anus—every part of her body was being stimulated, and I gradually approached the peak of her sensuality.

If I were a man, I could ejaculate multiple times, but now I could only passively accept the tentacles' pampering.

My moans grew louder, and the tentacles' movements between my thighs slowed. But inside me, they moved even more intensely. My entire body, covered in erogenous zones, was experiencing unprecedented stimulation.

The tentacle in my mouth tightly entwined my tongue.

Tentacles tightly gripped my breasts.

Tentacles on my nipples were desperately drawing in my milk.

Tentacles inside my anus were making violent piston-like movements.

Tentacles inside my vagina were constantly expanding.

Finally, the tips of the tentacles that had entered my uterus ejected a large number of fertilized eggs.

"Ah...!!!!!!!!!"

The woman finally reached her climax and fainted.

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Biochemical experimental animal sex

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