When Purifier awoke, she found herself on a bed in what she soon realized was a human hospital. She recognized the look of the room from the countless hours worth of human data injected into her mind.

"Well this place looks pretty fancy, I guess human engineering isn't as garbage as I thought." Purifier said to herself.

When Purifier tried to get up she felt something holding her down. She looked around and realized that her arms and legs were chained to the bed. As she was about to calculate what she could do in such a situation, the door at the front of the room opened. A brown haired human in a lab coat walked in.

"Oh you're awake now. Just in time for the tests too."

Purifier scowled at him as he began walking closer.

"I'm Lucas by the way." He stuck out his hand towards Purifier, knowing full well that she could not shake his hand. Purifier promptly spit in his hand. He chuckled and wiped his hand on his lab coat.

"Well, time to begin the first test." Lucas grabbed a pair of scissors that were sitting on the bedside table and climbed onto the bed.

"What the hell are you doing!?" Purifier asked angrily.

"Well, we can't have your shorts in the way during the tests now, can we?"

"Hey listen carefully you piece of shit! The second I'm out of here, I'm gonna cut your head off, and stick it onto a pole!"

"Yeesh, someone's a little mad."

Purifier continued to try and resist, however, due to the fact that she was chained to the bed, she could only watch as Lucas cut off her shorts by the front. Lucas took a few moments to examine Purifier's genitals afterwards.

"Wow, whoever made you certainly took a lot of care in designing your private parts." Lucas began moving his index finger closer and closer to Purifier's vagina.

"Are you deaf!? Do you not remember what- AH!" Purifier's anger was silenced after Lucas inserted his finger into her vagina and began moving it around inside.

"Mmmm…" Purifier let out a delighted moan, much to her own dismay. Lucas proceeded to insert his middle and ring fingers inside, which only intensified the pleasure Purifier was receiving once he started moving them around.

"Ah…oh…mmm…" Purifier's moaning began growing more lustful, eliciting a chuckle from Lucas.

"You like it, don't you? Well, the best has yet to come." He inserted his final two fingers inside Purifier and curled his hand into a fist. He then proceeded to twist and turn his hand inside, molding Purifier's inner walls.

"F-fuck you…GYAH!" Lucas' hand began twisting and turning much faster than before. Purifier suddenly noticed that her vagina was feeling unusually wet. She didn't have time to process this however, as a mysterious feeling began flooding her body. It felt like pain, but at the same time, it didn't.

"What is this-AGH!" Purifier gripped the sheets of the bed and let out a loud yell as her vagina began squirting a water-like fluid. After a few seconds, the fluid stopped spraying, and the exhausted, out-of-breath, Purifier, collapsed flat onto the bed. Lucas, who had taken his hand out a few moments before Purifier's first ejaculation, grabbed a paper towel and dried his hand.

"Well, congratulations, you've just had your first orgasm." Lucas grabbed a clipboard and pen sitting on the bedside table and began writing.

"Subject's reactions were extremely similar to that of a human. Subject also ejaculated for approximately 3 seconds. Will continue tests to attempt to find more similarities between siren and human physiology." Lucas put the clipboard and pen back onto the bedside table and climbed onto the bed once more.

"Hey what are you doing now!?"

"Trying to see if you Sirens have a clitoris."

"A cli-what n-YAGH!"

Lucas found and squeezed Purifier's clitoris with his finger, causing Purifier to let out a yelp.

"Wow, you're far more sensitive down there than any woman I've ever met. They might have overdone it a bit when creating you, though." Lucas said.

He then proceeded to rub Purifier's clitoris, sending a wave of excitement up her body.

"Mmmnnn…ngh…ohhh…"

"You still liking this?"

"If you think that-ngh…, for one-ugh…, fucking minute that I'm enjoying this…you are sorely mistaken."

Lucas stopped rubbing Purifier's clitoris and allowed Purifier to catch her breath.

She barely had two seconds to do so when Lucas stuck out his tongue and licked Purifier's clitoris.

"MPH!" Purifier gripped the bed sheets tight as a new form of excitement washed over her body. Lucas smiled and proceeded to continue licking Purifier's sensitive clitoris.

"NNGH!" Purifier suddenly began feeling the same mysterious feeling she felt before the first time she "orgasmed" as Lucas called it. Just as Purifier was about to have her second orgasm, Lucas stopped licking her clitoris. Purifier collapsed on the bed and attempted to begin processing what she had just experienced.

"That was-GYAH!" Lucas decided to squeeze Purifier's clitoris one last time. That last squeeze ended up pushing Purifier over the edge, causing her vagina to squirt the same water-like fluid as last time. Lucas stepped away from the trembling Purifier to continue jotting down notes on the clipboard from earlier.

"Subject proved to be quite sensitive on her clitoris. Subject also ejaculated a second time. Will continue tests to discover more about siren physiology." After putting the pen and clipboard back onto the bedside table, Lucas walked over to the cabinet and took out a pink oval shaped device of sorts, as well as a pink remote.

"Don't mind me, just going to insert this in here." Lucas said. He bent down and began attempting to put the vibrator inside Purifier's still-wet vagina

"Oh great, another method of human tortur-AGH!" Lucas eventually resorted to forcing the vibrator inside, which made Purifier let out a pained yell.

"You may think it's torture, but your body doesn't share your sentiment."

Purifier knew this was true, but attempted to continue lying anyway.

Once he knew the vibrator was secure inside Purifier, Lucas stood up and pressed a button on the remote he was holding. Purifier suddenly felt yet another unique wave of pleasure flow through her as the vibrator inside her vagina began vibrating.

"Ngh…mmmph…oh…" Purifier's moaning reached a new level of lustfulness as her inner walls continued to be massaged by the vibrator.

"See? Even you sound like you are enjoying it now."

"You mother fuUUUUCKER!" Purifier's retort was interrupted as Lucas pressed a different button on the remote, increasing the intensity of the vibrations.

"Ugh…mph…YAGH!" Moments after the vibrator's intensity increased, Purifier ejaculated once more, as her body was not used to such enormous pleasure. Lucas pressed the same button on the remote that he pressed last time, increasing the magnitude of the vibrations inside Purifier's vagina.

"AAGGHH!" Purifier's body began shaking and quivering, as her body had never been so ferociously aroused before. She felt yet another strange feeling boiling up inside her body.

"NNNGGHH!" Purifier clenched her teeth and hands and let out a muffled yell as she orgasmed for the fourth time in her life. By this point, Purifier's body was shaking so much, one would think she was having a seizure.

"Well, I'm gonna head to the break room for a little. See you later." Lucas said.

Before he exited the room, he pressed the same button he had been pressing previously an additional 3 times, and left the remote on the counter at the front of the room.

"OWWWWWW!" Purifier's body was being stimulated far beyond a reasonable threshold, and as a result, the overwhelming pleasure she was receiving had become mixed with pain. The pleasure became so overwhelming that Purifier had begun to cry.

However there was nothing Purifier could do except sit through it. She continued to orgasm again…

And again…

And again…

And again…

When Lucas opened the door, he was greeted by a crying and convulsing Purifier, as well as a large puddle on the floor. He walked over to the remote on the counter and pressed the large button in the middle, turning off the vibrator. Purifier fainted from exhaustion moments afterward.

2 days later

Purifier woke up to find herself on the same bed, in the same position, in the same room. Except one thing was different: there were several strangely shaped objects of various lengths laid out on the counter.

"We thought it would be best to keep you asleep for a little bit while we prepared for the second phase of the tests." Lucas said.

Purifier looked at the objects on the counter. "Let me guess, you got new torture toys while I was asleep."

"If you want to call them that, yes."

Lucas picked up a long, black, slightly misshapen object off of the counter and began walking towards Purifier with it.

"Do you know what this is?"

"Don't know, don't care."

"Your attempts at being uncooperative are impossibly weak. Anyways, this is called a dildo, they come in many sizes, however, this one is about seven inches long."

Lucas got onto the bed and began preparing to insert the dildo inside Purifier's vagina.

"Hey, HEY! Keep that thing away from me!"

"Relax, I can assure that you're gonna enjoy this a lot, just like how you enjoyed the first phase of the tests."

"I did not."

"Your cheeks were red and your vagina was wet, those two things are proof that you enjoyed the experience."

Purifier wanted to continue to oppose Lucas, however, deep down, she knew he was right.

"Mmmm…f-AGH!" Lucas attempted to slide the dildo inside Purifier gently, however, upon realizing just how tight her vagina was, he had to force it inside.

"Alright now, this is the closest thing to actual sex you're going to get out of the tests." Lucas began moving the dildo in and out of Purifier's tight vagina, causing her to moan after every movement the dildo performed.

"Mmmm…mph! Ohhhhh…ngh!" The stimulation Purifier's vagina was receiving from the dildo was very unlike the stimulation that came from the vibrator. Each movement Lucas made with the dildo massaged and rubbed Purifier's inner walls in their own unique way that Purifier could not describe.

"Not even trying to resist anymore?" Lucas asked, knowing the answer.

"Mmmm…" Purifier moaned in response.

After a few more strokes were performed by the dildo, Purifier began feeling another sensation boiling up inside her vagina. However, it felt different compared to how it did when she orgasmed with the vibrator.

"NYAGGHH!" As Purifier orgasmed, Lucas pressed a button on the back of the dildo, which caused it to release a thick, warm, white fluid inside of her. Purifier was left promptly confused after the orgasm, wondering what the warm feeling was inside of her vagina.

"So, you're probably wondering what that warm feeling down there was…" Lucas put the dildo back on the counter, with a small amount of white fluid leaking out the top.

"Yeah, I am, what exactly did you do to me?"

"I simulated what happens when a male orgasms during sex by having the dildo shoot out some milk I left simmering for a while. What did you think of it?"

By this point, Purifier could no longer resist the urge to express her enjoyment.

"It felt fucking amazing!"

Purifier realized what she said and immediately shut her mouth, however, she had already spoken her mind.

"Well then, what do you say we have a little bit of fun together?" Lucas unzipped his pants and began pulling them off. It was now when Purifier noticed the bulge in his pants that had been left unattended for the past few minutes. She was speculating what could have been causing that bulge when Lucas let his underwear fall to the ground, exposing his erect member.

"Now, this is not part of the tests." Lucas climbed onto the bed and began looming over Purifier, who finally realized what Lucas was about to do.

"D-do your worst…"

Lucas inserted his member inside Purifier, eliciting a loud moan from her, as well as a slight wince from Lucas, who found Purifier's vagina to be unexpectedly tight.

"Damn…" Lucas said.

He thrust his member inside Purifier, causing both to receive a very pleasant surprise.

"Ahhhhh…!" As Lucas' member came into contact with Purifier's womb, a new sensation of pleasure filled her body and left her with a lustful hunger for more.

"K-k-keep going…" Purifier said.

Lucas began repeatedly thrusting in and out of Purifier, giving her the experience she never knew she wanted. As Lucas was thrusting, he received a sudden inspiration. He proceeded to pull up Purifier's shirt, revealing her small and perky breasts.

"No bra? I never expected a siren to be so naughty…" Lucas bent his head down and began sucking on Purifier's left nipple, causing the siren to let out a soft whimper amongst her moaning. After a few seconds, Lucas stopped his sucking and his thrusting, as he didn't want either of them to climax too quickly. However, he decided to play with Purifier's clitoris in the hopes of ruining her orgasm.

"Mph!"

"I'm not sure you deserve to orgasm just yet."

Purifier's moaning began turning lustful, which Lucas took as a sign to remove his finger from her clitoris.

"Mmm!" Purifier pouted.

"I can let you orgasm, but I won't."

Lucas touched Purifier's clitoris one more time, causing Purifier to have what looked like an angry seizure on the bed.

"Fuck you…" Purifier said, smiling.

Lucas propelled his member inside Purifier once more, causing her to let out a very prolonged moan

"Alright, enough playing around." Lucas continued thrusting into Purifier with even more energy and speed than before. Purifier suddenly began feeling a burning-like sensation building up inside her vagina, which only increased her lust tenfold.

"Aaah…! Aaah…!" Purifier's ability to resist her orgasm was almost gone, a fact that her moaning made very obvious. She could feel Lucas' member throbbing inside as he was pounding her, which, unbeknownst to Purifier, meant only one thing.

"I'm gonna cum!"

Purifier was unable to question what this meant as her and Lucas both succumbed to their orgasms. All she could feel was bliss and extreme pleasure as her vagina was being pumped full of Lucas' seed. Once Lucas' orgasm had finally ended, he pulled out of the exhausted Purifier to let them both recover from what they had just experienced.

"I've never come so hard in my life…" Lucas said as sat on the side of the bed and pulled his underwear up.

Purifier looked at him with a fatigued expression, cum still leaking out of her vagina.

"Yeah…what does that even mean anyway…?"

Lucas looked at Purifier as though the answer was obvious.

"Oh… figures…"

Lucas finished putting his pants on and opened the door to the room. Just before he exited the room, Purifier finally decided to ask one last thing.

"Wait."

Lucas looked back at Purifier.

"Yes?"

"Can we…do it again sometime?"

Lucas smiled at the woman who finally decided to be honest with herself.

"Gladly."