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🕑 Added 2025-07-12 17:37:09 +0000 UTCEP.141. The AV Scientist’s Semen Collection
“Now that it’s hard, it’s really big.”
After knocking Seojin out, Chaemyung prepared to collect his semen and was a bit surprised by the size of his erection.
She’s not the type to be shocked by much, but his size was truly impressive.
“His balls are big and firm too, so the semen should come out well. He’s dating Hasooni, but do they not have sex often?”
Chaemyung knows about Hasooni’s perverted tendencies.
With a boyfriend like this, she’d expect constant sex, but the firmness and condition of his cock didn’t seem like one that’s been used much, which puzzled her.
“I’ll look into that later. For now, I need to get what I came for.”
Beep.
Brrrrrrr
She activated a slightly modified Tenga, turning it into a vibrating semen extraction tool.
“Five minutes should do.”
It was convenient to finish the extraction while he was unconscious, so she cranked up the power and filled it with plenty of gel.
“Alright, give me your semen.”
Chibuk chibuk chibuk chibuk chibuk
“Ugh?!”
As she put the Tenga on his cock, a small moan escaped and his body trembled slightly.
It was just a physiological reaction to sudden pleasure, so Chaemyung ignored it and continued with the extraction...
“This… I didn’t expect.”
The Tenga she’d prepared only covered about half his shaft.
‘This’ll take longer than I thought.’
His cock was so much bigger than expected that her Tenga was too small, which annoyed her not because it would take longer or he might wake up, but because her careful planning had been thrown off.
She prided herself on always being prepared, her genius mind predicting everything.
She’d even made this Tenga 1.5 times larger than standard, which is already oversized for most men.
But even so, it didn’t fit, which put her in a bad mood.
“Tsk. Hasooni sure picked a guy like this. Well, it suits her tastes.”
Even if it didn’t go as planned, it just meant extraction would take longer nothing else changed.
“Come on, hurry up and cum.”
She simply held the Tenga and waited, unaware of what was about to happen, focused only on her experiment.
Chibuk chibuk chibuk chibuk chibuk
‘What’s this unpleasant feeling?’
After smelling some unknown drug, Seojin had passed out.
He slowly regained consciousness, but couldn’t move his hands or feet.
Even stranger was the faint pleasure he felt from his cock.
“Ugh!?”
“Oh~ You’re awake?”
“What the ?! Ugh!!”
He opened his eyes to see Professor Na Chaemyung’s face and the Tenga in her hand.
Chibuk chibuk chibuk chibuk
“What the hell is this?!”
“Nothing much, I just need your semen in exchange for the aphrodisiac, so wait a bit longer.”
“I don’t get it at all!?”
She’d knocked him out, tied him up, and was extracting his semen a crazy situation.
Sure, he’d asked for the aphrodisiac, but this was crossing a line.
“Come on, hurry up and cum.”
She stared at his cock, completely uninterested in anything but the extraction, treating the sexual act with pure scientific detachment.
“It’s been ten minutes shouldn’t you be cumming by now?”
“You think I can just cum on command?!”
He’d planned to be polite, but after this, he had no intention of being nice.
“There’s no way I can cum quickly from just this much stimulation!”
“Hmm… This is twice as strong as a regular onahole. Is it not enough?”
He was so used to rough sex that his standards for pleasure were far above normal.
A moderately strong Tenga wasn’t enough for him, but Chaemyung didn’t know that and grew annoyed when he didn’t cum.
“At this rate, it’ll take all day.”
“I’ll do it myself, just untie me!”
“You might run, so that’s not happening.”
He didn’t mind giving semen, but she clearly didn’t trust him.
“Oh well. It’s all for the experiment.”
Tap tap tap
She adjusted the Tenga, opening up the blocked section so it became a fully open tunnel.
She pressed it down to envelop his shaft and started moving it.
“Some men can’t cum from onahole stimulation, and for your size, this Tenga’s a bit small, so it’ll probably take longer.”
Deciding not to waste more time, she put on smooth gloves and smiled.
“I’ll just make you cum myself.”
“What?”
She grabbed his glans and started stimulating it directly.
Tap tap tap tap
“Ugh!!”
‘Why is she so good at this?!’
She stimulated only the glans, but her technique was surprisingly skilled.
The Tenga kept working the shaft, while her hand handled the rest.
She didn’t seem like she’d ever had a man, but her technique was impressive.
“I watched a handjob video four years ago, just in case it’d be useful.”
Just from watching once, she could do it well no wonder she was called a genius.
“Ugh!”
“Oh~ It really is more stimulating by hand. I should record this for later.”
She acted like she was running an experiment, which only made him angrier.
He’d just wanted to buy some drugs, but being humiliated like this made him want revenge.
‘Just wait until I get loose!’
He started planning how to pay her back.
“Looks like it’s almost time.”
After about five minutes of hand stimulation, he started to twitch and swell.
It had taken a while, but Chaemyung was satisfied she’d get a bigger, richer sample this way.
‘This is my first time, but it’s not bad.’
She’d only watched a handjob video once, but could replicate it perfectly.
As she watched his reactions, she brought over a beaker, sensing he was about to cum.
“Ugh!!”
Splurt splurt splurt splurt splurt
“Oh wow. That’s a lot more than I expected.”
He shot out a powerful load, quickly filling the beaker.
‘Both the size and the amount are way above average. He might be a new kind of test subject.’
She’d planned to extract semen 4–5 more times, but this one load was more than enough.
“It’s heavy enough to feel in the beaker. No wonder Hasooni picked him.”
“Haa… haa… Untie me.”
“No need to rush.”
Now, more interested in studying him than her other experiments, she started planning what to do next.
Human testing has its issues, but she’d already developed mind-control drugs, so there was no problem.
“Let’s start with this.”
She sealed the semen and put it away.
“This is the aphrodisiac I promised… and here’s the mind-control potion…”
She muttered to herself, lining up the necessary items.
Once everything was ready, she returned to him.
“Sorry to keep you waiting. Drink this and rest.”
“What’s this… Ugh…”
It was the same knockout drug as before if used too often, it loses effect, but twice is fine.
“I’ll use the mind-control drug to get rid of your hostility, then give you the aphrodisiac… huh?”
After confirming he was out, she untied him.
She planned to hypnotize him into wanting to participate in future experiments, but before she could, he acted first.
“So you thought you could just do this to me?”
“Um… l-let’s talk this out…”
She reached for the potion to splash on him and hypnotize him, but he grabbed her other hand, trapping her completely.
‘I have to get out of this.’
She’d let her guard down, thinking he was just Hasooni’s boyfriend and would still be unconscious.
That small mistake was about to change her life.
“You could have just asked… but you tied me up and jerked me off?”
“L-let’s talk about this…”
She had no way to escape.
“If you do something wrong, you have to be punished.”
“I’ll pay you whatever you want, just let me go…”
If she could just get her hand free, she could throw the potion in his face.
She hadn’t expected him to use force, thinking he wouldn’t go that far as Hasooni’s friend.
Grab… hiss
“Huh? Wh-what are you ?!”
As she saw him do something she hadn’t anticipated, a sudden wave of sensation hit her and she collapsed on the spot.
