Nearly half an hour passed. The sensation of the monster's abuse was so intense that Isabella moaned and groaned until she ejaculated several times.
No matter how much she resisted, the urge to enjoy it grew stronger.
Isabella's breathing was heavy, her voice was starting to hoarse, and her body was tense yet weak.
Seeing Isabella's condition, Nadia gave her a drink to ward off dehydration. However, the drink she gave her was the same one that calmed her and made her feel every stimulation clearly.
Isabella, her senses sharpened again, immediately made lewd sounds.
"Please stop... I feel strange..."
"Where does it feel strange?"
"My lower half... and my chest feel strange..."
Nadia touched one of Isabella's breasts, which was covered by the monster, and began massaging it.
"You mean your breasts? What do you feel?"
"It feels like something is moving inside me. They're so full, and they feel like they're filling me up."
"Does it feel good?"
"How could it feel good! Stop this immediately!"
Nadia looked at her two assistants, and they immediately began touching Isabella.
Their hands groped Isabella's body beneath her clothes. The indirect contact with her skin felt less stimulating. But that was precisely what made her unsatisfied, wanting more pleasurable touches, even though she felt uncomfortable.
"I think they like it," Nadia said as she watched the three monsters' movements grow increasingly enthusiastic about Isabella's arousal.
Nadia whispered, "Hey, did you know? They're not actually lab-created monsters, but real, wild monsters."
Isabella's eyes widened.
Real monsters not only have the urge to kill and eat humans or other living creatures, but many of them also have the urge to reproduce in strange and terrifying ways.
Isabella looked at the monsters on her breasts. She didn't know what was happening, but remembering the feeling of her breasts moving and seemingly filling made her shiver and uneasy.
She then looked down at her crotch, where the tentacle monster continued to rub against her genitals, nearly ripping through the pants that had been protecting her.
"A body rarely touched by men. Who could resist their own savagery when they finally get it?"
"The excuse of helping a child... that's a lie, isn't it?" Isabella looked angry, but her voice was trembling.
"Why would you think that? Could it be that you think we actually just want to experiment and play with your body? We're not people who like to abuse others by setting up plays, and monsters who like to implant their seeds in women."
Nadia's denial which sounded exactly like what was happening, only made Isabella even more afraid.
Isabella looked at the monster in her genitals in horror. Unfortunately, the tension made her genitals twitch occasionally, further encouraging the monster to pierce her pants.
"They can make slight modifications to their partner's body, allowing for better ovulation. To them, you're a kind of incubator... a vessel ready to be filled with baby seeds."
After much effort, the monster in Isabella's vagina finally managed to break through her pants and move into her vagina.
Isabella immediately gasped and felt like she was about to ejaculate again at the penetration.
However a few seconds later, Isabella didn't feel the continuation that should have happened.
She saw that the monster's tentacle had only managed to enter her entrance, and the monster's main body was missing.
Isabella followed the length of the tentacle and found Nadia, who had removed the monster from her—just before it could rape her.
Nadia's two assistants did the same. They removed the monster from her breasts and placed it back in the box.
Isabella, slightly dazed from sexual stimulation, looked at them and felt confused.
"Congratulations, the main process is complete." Nadia and her two assistants smiled kindly and cleaned the mucus off Isabella's body.
After the restraints on her hands and feet were removed, her still limp body immediately fell to the ground, barely standing.
However, Nadia's two assistants managed to catch her and quickly helped her to her feet.
"Did I miss something?" Isabella asked, addressing the sudden change in mood.
"No. When you feel the movement and changes in your breasts, your mammary glands are actually undergoing the normal changes that occur during pregnancy, it's just that you're experiencing the process too quickly."
Nadia showed me a computer screen displaying the internal structure of Isabella's breasts.
"I expected the process to take more than an hour. But it seems like you have a very fertile body. So your body quickly adapted and made the process go more smoothly... We might even miss a thing or two."
"Here... Let me help."
One of Nadia's assistants, who had previously seemed indifferent, handed her a new outfit and helped Isabella put it on.
"Thank you."
"This is the most natural method," Nadia explained again. "It's still difficult to find a device that can perfectly mimic a baby's sucking motion. We can't just ask a human to do it... Especially if it has to last for an hour straight."
Isabella imagined a pervert doing that, and then falling to the ground with a sore mouth and a dry throat.
"I guess that makes sense."
"Glad you understand. That's why we chose to use monsters for the process. They're easy to obtain and modify, have high stamina, and when they're no longer usable or needed, they can simply be thrown away or killed..."
"...By the way, the monsters we use are ones that inject a kind of pheromone or drug that makes women produce milk. But don't worry, one of the injections contains an antidote to address any potential side effects. So you're safe."
Isabella immediately recalled the injections she had been given.
She initially thought they were drugs to stimulate her or stimulate her breasts to produce milk, but it seems that wasn't entirely true.
They had taken precautions for her safety from the start.
"Sorry, I misunderstood," Isabella said—though she still couldn't accept their treatment.
"It's okay. If it were anyone else, their reaction would have been worse... We had to delay the explanation a bit to make your emotions more real and the effect stronger."
For a while, Isabella continued to receive explanations about everything that had happened to her.
One by one, the terrible things she had experienced became more bearable as the true purpose and reasoning were revealed...
...And in the midst of that explanation, Isabella continued to ponder the mindset of the scientists before her.
"There's still a final process you have to go through to get your breasts to produce milk properly."
"Huh, up to you. Do whatever you like."
"Don't worry. This one is just a normal procedure. You can even sleep or relax while we do it."