Chapter 2

“Hmm, so…”

“…”

“You’re saying you’ll be my partner going forward, Doctor?”

Inside the cafe in the middle of the afternoon, the man sitting across from Erin had been looking her up and down with a greasy gaze. Erin hid her disgust and smiled softly.

“Yes. That’s how it will be.”

“That’s truly unexpected.”

“Is it?”

“I thought another female applicant would show up.”

‘I thought that at first, too.’

This was Erin’s final move, the one she had planned to use as a last resort. It was…

“So you and I will be examining the effectiveness of the contraceptive by doing ‘that sort of thing’ together, am I right?”

“Of course.”

…the method of Erin herself volunteering to be the test subject.

‘For now, the only people who know this fact are the test subjects I’ll be meeting.’

When Erin came out and said she would be the female test subject herself, the man seemed quite surprised but also pleased. Erin glanced at the male applicant she had carefully chosen.

‘I’m not just going to do it with this person, though.’

To properly analyze the contraceptive’s effectiveness, she was firmly resolved to do it with several different men. Still, among the many applications, she had chosen this man first because he seemed the most decent and promising.

“But if you do something like that, it’ll be hard to get married in the future, you know.”

“…”

“You can’t just play around with your body, Doctor.”

The man’s smirk felt really unpleasant. No, not just a little, but a lot.

“I’m an academy graduate too, so technically, I’m your junior.”

“Yes. I saw that on your application.”

He wasn’t the only junior. Erin had also found a few of her peers’ names among the applicants. She hadn’t dared to meet them, and she couldn’t guess their intentions, so she hadn’t even called them in. They just felt unpleasant. But her first chosen applicant, whom she had selected to avoid them, was…

“To be able to do this with a senior like you, I have to say, I’m a little excited.”

“…”

“Is this your first time, by any chance? I feel a little pressured thinking I’ll be your first. But of course, I’m thrilled.”

“Ah, yes.”

“What’s the trial process like? I suppose foreplay…”

‘If I listen any longer, my ears will rot.’

It was truly something else. He continued to list his preferences, subtly evaluating Erin’s body and looking her over with a greasy gaze. The things he said felt like sexual harassment.

“…So when you meet me, you’ll be wearing this kind of lingerie…”

Feeling more and more miserable, Erin temporarily closed her ears and looked up at the ceiling.

She was so screwed.

‘I was so sure I’d picked a good one.’

She had checked his health status, his attached portrait, and whether his usual conduct was trustworthy…

‘So why did I get stuck with this guy?’

He even seemed to have lied about his portrait. It was clearly idealized to be ten times better than the original. He probably exaggerated his height, too.

‘And this was the best candidate I had.’

She was starting to dread even looking at the next candidates. It made her wonder if she really had to go through this with a guy like him to prove the drug’s efficacy. If this experiment wasn’t so important, something she had dedicated years to, she would have given up right then and there.

‘I wanted my first time to be with someone a little more decent.’

Of course, Erin didn’t have any grand fantasies about sex, and she wasn’t obsessed with purity. As a modern person at heart, she thought it was ridiculous for people to restrict a woman’s clothing or behavior by emphasizing purity and fidelity. She honestly didn’t care about the ladylike demeanor forced upon noble ladies or the strict gender-segregated norms. Besides, rather than asking other women to do it, it felt a little more ethical for her, the leader of the experiment, to do it herself, even if it was a bit uncomfortable.

‘But still…’

She wasn’t without a minimum level of fantasy, having had no dating experience in either her past or current life because she was always too busy trying to survive. Her fantasy was just to have her first time with someone she liked, or at least with someone who had good manners.

‘…I wasn’t asking for much.’

She wasn’t asking for a handsome, well-built, young, rich, and kind man who was also well-endowed. Erin knew very well that men like that only existed in fantasies or ancient records, like unicorns. Even Ash, who met the first two criteria of being handsome and well-built, was in a tough enough situation to apply for a pittance as a researcher’s assistant.

She hadn’t paid attention to his age when she hired him, so she couldn’t remember it. She wasn’t sure if his personality was really that great, and as for his… down there…

‘Looking at how his pants occasionally bulge, it seems to be above average.’

Gasp.

Erin quickly shook her head, realizing she had been thinking about her assistant’s private parts. To be having sexually harassing thoughts about her assistant while in front of another applicant—she was so not qualified to be a doctor.

“…So, when can we begin the trial?”

While Erin was lost in thought about Ash, the test applicant continued, a greasy smile plastered on his face. It was obvious that he wanted to do it right then and there if possible. His eyes were already glossy as if imagining Erin’s naked body.

“I’m so excited for the trial. I may not look it, but I have a reputation for being good to women and having good manners…”

‘Ugh.’

Erin almost made a disgusted face at his sleazy wink but managed to compose herself.

“Of course, I’m not just thinking of lewd things. This is strictly for the sake of the trial. Right? But if I could make one suggestion, my preference is for my partner to worship me like a master…”

‘This is serious.’

She almost hit him in the face with a menu. He had no filter, even in the middle of a cafe with other customers.

‘This can’t be right.’

Erin was seriously debating whether she should make this guy a test subject.

‘No. Even if he has flaws in his character, his sperm won’t have any problems.’

…Would it really not?

Should she just quit? But what about the trial? Is he really the only one? But he was the most decent applicant. How bad could the rest be…? Her thoughts spiraled endlessly. As Erin felt a sense of futility and let his unpleasant words flow past her like water, the cafe door opened with a ding. People’s attention was instantly drawn to the entrance.

A young man with a solid build and a handsomely chiseled lower face—half-hidden by a hood—entered, radiating an extraordinary aura. Unconscious gasps of admiration escaped the mouths of female customers and even some men.

“…”

Erin, who had been lost in a daze, was a bit slow to realize who the young man was. It was only when he approached their table that she did.

“Huh?”

She flinched. There was no way she couldn’t recognize him even with the hood. That perfectly sculpted body and the handsomeness that seemed to pierce through the fabric were…

‘Ash?’

Panic welled up. She didn’t want him to see this. She had come out without telling him on purpose. But before she could call out to Ash, Whack!

“Agh!”

Ash slammed a heavy bag he was holding into the man’s face. At the loud sound, a silence fell over the cafe like spilled water.

“W-what is this… what is…”

The man who was hit yelled in confusion. 

Whack! Whack! Thump!

But before the man could properly protest, the bag came flying at him again, relentlessly.

Whoosh.

He hit him so hard that the bag ripped open, and the bread inside scattered all over the floor. Erin flinched when she saw the bread.

‘That’s the early-morning limited-edition bread from my favorite bakery.’

What a waste…

Despite the urgency of the situation, this thought popped into her head. Ash, however, looked at the torn bag as if it were a broken pen, threw it aside, and picked up a menu.

“Uh…?”

Thump!

As if to fulfill Erin’s fantasy of hitting the man with the menu, Ash began to slam the menu down on the stunned man. His movements were ruthless and sharp, as if he were trying to rearrange the man’s poorly positioned features. He hit him so hard that the corner of the menu was bent.

Thump, thump, thump, thud, whack!

“Hnn, hnnngh, ugh…”

By the time the man started foaming at the mouth, barely able to breathe, a dazed Erin finally stood up.

“Ash! Stop!”

“Agh! Ugh! Ughhh!”

“Ash!”

She clung to him with all her might, but it wasn’t easy to restrain his powerful hands. After beating the man a few more times, turning him into a pulp, Ash finally turned to look at her, only after she was clinging to him with her whole body. The cafe owner and the other customers were staring at them in a daze.

Before anyone could recover, Erin began scolding Ash and pushed him out of the store.

“Are you crazy, are you crazy!”

She suddenly remembered she hadn’t paid for her tea, but she didn’t dare go back.

“What were you thinking, Ash!”

Of course, it was incredibly gratifying, and she was grateful that he hit him for her! She felt like she would have hit him herself if she had heard a few more words! But despite this, she couldn’t shake her worry.

‘To hit someone so badly in front of everyone.’

It would have been better if he had done it somewhere no one could see. Now it was impossible to deny it.

“That man is a nobleman! What if he sues you for assault!”

What would she do if her handsome, slightly twisted, yet kind and gentle assistant went to jail just for hitting a piece of trash and a sexual harasser? And she couldn’t even pay his bail.

While Erin was stomping her feet in a panic, Ash let out a small sigh and took her by the wrist. He led her into a dark alleyway and pushed her against the wall, placing a hand on either side of her head.

“Ash?”

Erin tensed up as his body moved closer to her in an instant. A cold voice fell from above her.

“Surely… you weren’t seriously planning on doing it with that scum, were you?”

Hiccup.

The sudden, chilling atmosphere made Erin’s eyes dart around. The prominent veins in Ash’s jaw showed just how angry he was. The shadow he cast seemed to swallow Erin’s small body whole.

“Please don’t tell me you put yourself forward as a test subject just to find some guy like that.”

Even as she felt Ash’s rage, his words somehow touched her. He had punished that man for her. She could feel his concern and worry. The three years they had spent together hadn’t been for nothing.

Still, what was scary was still scary. She had come out in secret because she knew Ash would fiercely oppose her, but he had found her anyway.

“Ash, listen, this is just…”

“…”

“You’re still wearing your hood outside? I don’t think you need to…”

Erin stammered, trying to change the subject.

“When the Duke told you to finish the experiment, he probably didn’t want you to go this far.”

Her feeble attempt was cut short. Even with his vision partially obscured by the hood, Ash looked down at Erin with eyes so intense she could feel his gaze burning through her.

“Is this experiment really that important to you?”

“…Of course it is, Ash.”

Erin swallowed and replied. She patted his shoulder to calm him down.

“It’s important not only to me but to the Duke, too. That’s why he’s been hounding me… no, pressing me so much. You know that.”

“…”

“So I have to get results.”

Of course, it wasn’t just because of the Duke’s pressure or her debt. It was also for the sake of the young heroine who would soon fall into a pit of misery and for the women who would be caught and killed by the male lead simply for resembling her. And for the countless other women in this crazy, angsty romance world who would have no choice but to die from a botched abortion, die in childbirth, or simply run away after getting pregnant.

‘Right. If you’ve drawn a sword, you must at least slice a radish.’

Thinking of the heroine, Erin’s face became determined. She had come too far to back down now.

“This is something I have to do, Ash.”

Even as she feared Ash’s anger, she stood her ground and looked up at him.

“Then I’ll do it.”

Huh?

He’ll do it? What?

Erin’s mouth fell open, unable to understand what Ash had just said. Reading the confusion on her face, Ash’s lips quirked into a crooked smile.

“I said I’ll do it.”

“W-what?”

“The thing you require of a test subject.”

“…What?”

Erin had forgotten what to say and stared up at Ash, her mouth wide open. Ash silently lifted her chin to close her mouth, then curved his thin lips and whispered.

“I’ve already finished my check-up. I don’t have any impure diseases, and my body is healthy.”

“Huh?”

“I’ve never done it with anyone before, but I’ll study up to do my best.”

“H-huh?”

“I’m a quick learner, so you don’t have to worry about that part. I’m confident I can accommodate your wishes, and I can prioritize the clinical trial to cooperate with you…”

“Wait! Wait a minute, Ash!”

“What’s wrong?”

‘You’re the student and I’m the teacher… no, that’s not right!’

“You’re the assistant, and I’m the Doctor!”

“…”

“Between us, we can’t… we can’t do that kind of thing. It’s…”

The conversation had already progressed too far, and Erin panicked, grabbing his arm. As if he had been waiting for this, Ash wrapped his arm around her waist. In an instant, their bodies were pressed together.

“What reason is there for it to be a bad idea?”

His voice was low and hoarse, enveloping Erin’s ears. She felt the atmosphere heat up in an instant, unable to even think of pushing him away. A warmth rose from where their chests were pressed together, and then…

Jolt.

A menacing object, already aroused and making its presence known, rubbed against her thigh and her private parts. She wanted to say something, but her mouth wouldn’t open. Her mind instantly went hazy from the heated air. 

‘But he’s my assistant. This isn’t right…’

As she thought that, she felt the voice of her instincts rise up and crush her reason.

‘Honestly, if it’s Ash…’

Frankly, Ash was clearly a much better choice than the clinical trial candidate she had met moments ago. Although there was a major disadvantage: she would have to see his face in the lab every day.

‘But rather than losing my first time to a guy like that…’

Compared to a low-class man who would treat her body like a toy, Ash, who was always considerate of her, many times more handsome, and well-built, seemed like a much better partner. The weight she felt below was quite substantial. Honestly, she didn’t think she would regret it. Even if it meant enduring the disadvantage of seeing him every day.

‘No, rather, if that one disadvantage wasn’t there…’

If she had met Ash outside of her role as his superior, and if he had seduced her like this, she would have accepted without a moment’s hesitation. How could she refuse the temptation of a man like this?

“Doctor.”

As if he had read her thoughts, Ash’s lips twisted into an even more crooked smile. Just then, a beam of sunlight cut through the alley, landing on his excessively handsome nose. It looked like a spotlight on an actor.

“What will you do?”

“…”

“Of course, even if you refuse, I intend to go through with this.”

Saying that, Ash nonchalantly lifted Erin’s hand and toyed with it. Soon, his soft and warm lips were busily moving up and down her fingers, the back of her hand, and her palm. A jolt shot through Erin’s lower abdomen. Ash, who had been rubbing his lips on her hand, now rubbed his cheek against her palm.

Then…

“Because I can’t stand to see you rolling around with some unclean scumbag out there.”

He whispered in a voice that was excessively low and sensual.

“Gasp!”

Crash. 

Something toppled over. It must have been the equipment stacked up by the lab entrance, but she wasn’t given a moment to pick it up.

“A-Ash!”

Erin let out a small shriek as Ash lifted her, and she clung to his neck. His laughter and the vibration it produced made Erin feel a little dizzy.

“You’re late, Doctor.”

In that alley, the moment Erin nodded with a hazy expression, Ash returned to the lab with her without looking back. As if the violent incident that had just occurred was unimportant.

‘That’s right. That…’

Erin’s reason whispered belatedly. She’d forgotten—she needed to call the trial candidate earlier, and beg him not to press charges against Ash…

“So, will you focus on this instead?”

“Hmph!”

Saying that, Ash swung his arm without hesitation, sending the documents on the lab desk scattering to the floor. It was the list of test participants that Erin had been looking at just before she left.

Erin’s body was then placed on the empty desk. Ash looked at the dazed Erin and licked his lips with his tongue. Erin, whose eyes had once again become hazy, watched his tongue. The red flesh peeking out looked incredibly lewd.

“I wanted to do this in a better place for your first time, but…”

“…”

“I thought you would be uncomfortable.”

Ash said that and tidied her stray hair. Erin was secretly impressed.

…Because his words were true.

‘If he had booked a hotel, it would have been too much to handle.’

Although they would have to work together here tomorrow, at least this place was comfortable for Erin.

‘I’m about to sleep with my assistant, who I’ll see again anyway.’

Thinking that way, she felt a certain thrill from this small—no, not small, but still—transgression in the place where she only ever worked. It felt new to her that Ash had gotten to know her so well over the past three years.

‘And I had to come here anyway.’

Because…

“Here, Doctor.”

Before Erin could get it herself, Ash had already gone to the cabinet in the corner of the lab and brought back a small glass bottle. It was a bottle containing the mysteriously glowing pink liquid—Erin’s contraceptive drug.

‘Because that was in here.’

Gulp.

Erin’s fingertips trembled slightly as she took the bottle, feeling a sense of nervous excitement. She opened the bottle, poured out a certain amount, and they drank it together. The taste of the new drug was as strange as its color.

‘Should I make it easier to drink?’

As she was idly thinking about whether to add some sweetness later, a clink was heard as the bottle was put down. Then a click. Erin looked down, startled by the sound. Ash’s hands were smoothly unbuttoning the front of her dress.

“Ash?”

She called his name, and their eyes met. Ash made a face as if to say, ‘Ah,’ and then blinked and smiled.

“The order was wrong.”

“Huh…?”

“I should have done this first.”

As soon as he finished speaking, his face moved closer.

“…”

His face was always excessively handsome. The harmony of his features made her think that God had truly sculpted this man beautifully. The combination of his red eyes that seemed to shine whenever he blinked, and his grey hair, was a rare one that felt like a blessing from God.

“Gasp!”

Erin, who had been admiring his approaching face in a daze, finally snapped back to reality when his beautiful lips parted slightly and touched the corner of her own. The soft, gentle sensation that instantly met her lips almost made her reason disappear completely.

“…Wait!”

She quickly placed her hand over Ash’s mouth, and he looked displeased, as if to ask what the problem was. Erin shook her head, feeling her face turn bright red.

“Y-you don’t have to do all this!”

“…”

“I have something prepared…”

Erin gestured toward the small room attached to the lab. Inside was a chair she had recently modified herself. It had a similar design to the ones used in modern gynecologists’ offices, where the legs would spread when you sat down and leaned back.

‘I never thought I’d be the one using it…’

It might be a bit uncomfortable and awkward, but it didn’t matter. She had designed it so a curtain could be pulled around the waist.

‘That way, it’ll be less awkward for both of us.’

The candidate had been talking about their encounter as if it were a proper relationship, and Erin had initially thought she wanted to do it with a decent person, but… In fact, she had excluded the idea of pleasure from this trial from the start. That chair was an idea to prevent the female test subjects from feeling uncomfortable from unnecessary foreplay or fondling.

‘It’s a trial just to get sperm.’

To be precise, though it was a vulgar expression, she only needed him to fuck and cum. It was a trial to prove that even if they did that, she wouldn’t get pregnant. A trial to be able to say how they did it and how many times, but no child was conceived because of this drug. In a trial like that, she didn’t think elaborate foreplay or fondling was necessary. At most, she’d get a little wet for a smooth insertion, and then he’d thrust a few times…

‘That way, it’ll be less embarrassing for both of us.’

She had said it with that thought in mind, but Ash’s brow furrowed, as if something was wrong.

“Ah!”

Then, he bit the hand she had over his mouth. It wasn’t a painful bite, but a gentle, playful one, like a puppy nibbling. Still, Erin’s eyes widened and her mouth fell open, surprised that a man as mature as Ash would do something like that.

Taking advantage of her open mouth, Ash suddenly pushed his thumb inside and pressed down on the soft flesh of her inner cheek.

“What do you mean by that, Doctor?”

“Hmph…”

“If you’re thinking of using that hideous, unfeeling, unromantic chair…”

Erin tried to nod, but Ash, with his thumb in her mouth and his other fingers gently holding her jaw, stopped her. He then furrowed his brow even deeper.

“I don’t want that.”

“Hmph, what?”

“As a test subject, I don’t want that.”

His eyes seemed to ask her to respect his wishes.

‘Then what…’

Erin nodded, intending to accommodate him as much as possible. As soon as she did…

“Gasp!”

Their lips met before she had a chance to evade him.

A thick tongue parted her lips, sweeping across the tender inside of her mouth. It traced along the ridges she’d worn on the inside of her cheek from years of biting down while working, as if to soothe them. The sensation wiped her thoughts blank.

‘Th-this kind of thing.’

But that’s not necessary…

‘…He said it was necessary, so yeah…’

Erin rationalized her mind, which was becoming more and more hazy. She couldn’t form any coherent thoughts as the sensual act inside her mouth consumed her. Wet, squelching sounds of their bodies and pants filled the air from between her lips. As if to swallow every sound, Ash’s tongue traced her teeth and then plunged deeper inside. It was more than a kiss. His assault on her mouth felt as if he intended to conquer all of her with his tongue.

“Hnnng…”

Erin was unaware of the saliva dripping from her open mouth as she concentrated on the sensations Ash gave her. Her mind became even hazier from the lack of air. As her eyes glazed over and she let him do whatever he wanted with her mouth and tongue, the strength slowly drained from her hands that were gripping his arms.

“…”

Sensing her weakness, Ash finally pulled his face away and looked at her. Erin, who belatedly realized she had to breathe, gasped and gulped down air.

“Hnn, hnnng, gasp…”

“My, my.”

“Gasp, hnnn…”

“Breathe, Doctor.”

His whispering voice was enchanting. The belated realization that this was her first kiss struck Erin’s mind. But for some reason, it didn’t feel like a kiss. It was more like…

‘It felt like he was… thrusting with his tongue.’

Erin shuddered, recalling the sensations from just a moment ago. Ash looked at her with what seemed like pity and reached out a finger to rub her lips.

“Oh!”

But instead of just wiping away the saliva, Ash dragged it down, his finger traveling all the way down to her collarbone. The open part of her dress, unbuttoned by Ash, revealed the beginning of her cleavage.

Jolt. 

Even as Erin flinched again, Ash’s eyes, fixed on her chest, became more sensual.

Click, click. 

She heard the sound of her remaining buttons being undone.

“Ah, ngh…”

Before she could feel the cold air, a large, thick knuckle approached. 

Click. 

The sound of her bra clasp being unhooked was heard. His movements were surprisingly practiced and quick. As she realized this, the reason that she thought was long gone returned just for a second.

‘Ash… isn’t a virgin?’

“I’ve never done it with anyone before, but I’ll study up to do my best.”

Even though he said that, Ash’s hands were exceedingly skilled. It was as if he had practiced many times in preparation for this moment… or as if he had already embraced many women before.

‘There’s no way he practiced for this moment.’

So, he must have been with other women. It would be strange for a man with Ash’s face and body to have no dating experience. She had never seen him with a girlfriend during the three years he had been at the lab, but that was just what she assumed.

‘He could have dated a lot before he came to the lab…’

Why was it that just the thought of it made a sharp pang go through her heart? Who would a man like Ash date? He would have met someone as beautiful and perfect as him. The thought of Ash with someone else made her heart feel even more restless. Erin was startled by herself.

‘Erin, are you out of your mind?’

What did it matter who her lab assistant dated? What kind of boss cared about things like that? It even felt like jealousy!

‘Isn’t this a little pathetic?’

She never dreamed she would become someone so disgusting.

“You’re distracted again.”

“Hmph, ngh!”

Saying that, Ash pinched the spot on her chest where her nipple was, as if to scold her. Erin gasped and looked up at him in surprise. Her nipple was throbbing even though he hadn’t pinched her that hard. Ash, who was slowly squeezing and releasing her breast, was looking at her with narrowed eyes. He seemed displeased.

“Ash?”

“I’m touching your breast, Doctor.”

“…”

“And you have the leisure to think of other things. That’s amazing.”

“T-that’s…”

“Or maybe…”

He sounded quite hurt. Erin instinctively looked at Ash, her attention on the heat that was building at her nipples.

“…Do I not seem like a man to you?”

His voice sounded so wounded that Erin tried to shake her head. 

‘No. What are you talking about? The problem was that you looked too much like a man just a moment ago. My heart even ached just imagining your dating life.’

She didn’t say it, thanks to her last bit of reason. If she said that out loud, she would become a truly disgraceful superior. To say such a thing to an assistant who couldn’t refuse her… it would be no different than abusing her rank.

“Hic!”

She didn’t have the time to think anymore. 

Swoosh. 

Ash had completely pushed away her bra, which had been loosely hanging on her chest after the clasp was undone.

“A-Ash…”

A gasp seemed to escape Ash’s lips as he saw her round breasts. Erin’s face flushed hotly as her bare chest was exposed. It was worse because Ash remained silent for a while, just staring intently at her. Just as her chest stood on end from his persistent gaze, his hoarse voice was heard.

“You’re beautiful, Doctor.”

“Hnn…”

The words were enough to make her unconsciously moan.

“Even more beautiful than I imagined.”

Erin’s mouth fell open in surprise at what happened next.

“Ash! Ah!”

Ash, who had been fondling her breasts with enraptured eyes, suddenly knelt and crawled between her legs! A soft sensation touched her calf before she could stop him. It was the feeling of his tongue licking her skin.

“Ngh…”

Her toes curled up. She could distinctly feel him nibbling through her stockings. Ash gently bit her plump legs and then moved up to her thigh, biting her stocking and pulling it down. The stocking came off so easily it was almost pathetic. He kissed her bare skin several times and then firmly settled himself between her spread legs.

Erin unconsciously grabbed his head. But that couldn’t stop him.

“Ah!”

With a short shriek, Erin gasped. She felt the hot flesh that had been languidly licking her thigh move directly to her sex. His tongue, which was kneading her panties and making the thin fabric wet with heat, now pushed the drenched fabric aside and burrowed inside her. He pressed his tongue on the sensitive folds and licked them and then pressed down on the small nub that was beginning to swell. A moan escaped Erin’s lips.

“Ah, j-jus…”

“Shhh, Doctor.”

Ash’s voice, whispering against her sex, sent a shiver down her neck. He held her thighs, covering them from the outside in, and stroked them gently, as if to soothe her.

“You have to get properly wet.”

“Hnn…”

“That way, you won’t get hurt.”

“B-but…”

‘But this is…’

As she felt like she wanted to cry, Ash gently held her thighs again as if to console her. It also felt a little like he was scolding her for not concentrating on the trial.

“You know this is necessary, Doctor.”

“Hnn, hnnngh!”

At his words, the tongue that was burrowing inside her became even more insistent.

“Hnn, hnnngh, ngh, ah!”

His tongue meticulously traced every fold of her inner walls, then deliberately licked them for a long time before retreating. When his mouth sucked on the butterfly-like flesh and then moved to her clitoris, Erin involuntarily let out a long, high-pitched cry.

“Ah, ngh, hnn!”

The strong sucking and the way he rolled his tongue were dizzying. The lewd, squelching sounds from below were just as dizzying. Her legs were trembling uncontrollably.

‘This is… strange.’

A feeling of her world dropping out from under her, as if she had jumped from a great height without a rope, shot through her head.

“A-Ash, Ash…!”

Gasp!

Her chest swelled up, and her breasts, like two loaves of white bread, trembled. Erin unconsciously shook her head.

“Th-that’s too much, pl-please stop…!”

But instead of stopping, his lips sucked on her with a strength that was several times more intense.

“Ah!”

With a single shriek, Erin’s body became drenched below.

“…”

After the first shriek, nothing came out of her wide-open mouth. Only a tingling sensation spread throughout her body, severing every rational thought. The shock of her first climax was new and unfamiliar.

Because of this, Erin was a little slow to realize what had just touched her.

“Ngh, ngh…?”

It was thick and hot, and it was rubbing against her gap as if to burrow inside. What she had first thought was a club…

“A-Ash!”

It was Ash’s terrifyingly swollen erection.

Erin couldn’t tear her eyes away from Ash’s member. She knew her pupils were trembling, but she couldn’t control her gaze. It was as large as a child’s arm, and it seemed so monstrously big that she wondered where he had even been storing it. The vividly blue veins stood out on its surface, and it was slightly curved. A thick fluid slowly dripped from the tip of the head, which was the size of a child’s fist, and dripped onto her clitoris.

It was a terribly lewd sight and sensation.

‘That… that’s going inside me?’

Erin was in a daze, her grip on reality disappearing.

“Hnn, ngh!”

The tip of his penis, which was explicitly pushing into her folds, slowly began to push and shove its way inside with a sense of pressure.

“A-Ash! Wait!”

Erin wasn’t mentally prepared, so she unconsciously reached for Ash’s shoulder. Her head tilted back in a panic at the heat that was prodding at her entrance.

“…”

And then…

Erin was speechless.

“…I’m sorry, Doctor.”

His red eyes were filled with lust, shimmering. They looked so hazy they seemed to be dripping water.

‘I’ve never seen Ash’s eyes like this before.’

This was different from when he would look at her with a rational expression, treating her like an immature younger sister, no matter what she did. Erin saw herself reflected in his blazing eyes and was left gaping, unable to say a word. As she unconsciously stroked Ash’s firm body, he let out a long groan, a mix of satisfaction and lust.

“…I want to go as slowly as possible for you.”

With his slow words, Ash’s body began to push inside. As Erin’s body instinctively flinched, Ash pressed himself against her, body to body, as if to pin her down. The sensation of their bodies pressing together set Erin’s heart on fire even more than the pressure she felt below.

“A-Ash…”

Heat rose from between their tightly pressed bodies. Erin shivered at how close they were, so close that she could feel sweat flowing between their bare skins.

‘His body is… this…’

This big and warm?

As if under a spell, she put her hands on his shoulders and then, without realizing it, wrapped them around his neck.

“I’m sorry, Doctor.”

“Huh?”

“I’ve just… been waiting for too long.”

‘Huh?’

Before she could understand, she heard the sound of him gritting his teeth. Then, a wave-like pressure surged in, and Erin screamed unconsciously.

“Ah, a-agh, hnnngh!”

“Hmph…”

The insertion was so overwhelming it made her cry out.

“A-Ash, Ash…”

“It’s okay…”

“It, it won’t fit, it won’t…”

“You can do it, Doctor.”

“Hnnngh…”

As she kept whimpering, Ash left a long kiss on her temple and whispered softly.

“Don’t you have to see the results of the experiment?”

Hearing that, the focus returned to her blurry vision. 

‘Right. The experiment.’

“You’ve worked so hard for so long. You can’t give up now.”

‘Right. He has a point. I have to get results. Results…’

“I’ll… inside you.”

‘Ash, inside me. I have to make him cum.’

As soon as she thought that, a thrill shot through her head like lightning. She realized the thought she had was excessively lewd and explicit. To make him cum. To make him cum inside her. It was a terribly vulgar and obscene thought.

But those words only added to the heat inside her. As if he had noticed, Ash lowered his body and whispered.

“Even if I cum a lot, a child won’t be born.”

“Ah, ngh!”

“We have to prove it.”

At his words, Erin unconsciously opened her legs a little more. The shame she had felt before disappeared, overshadowed by the heat that was rising from their touching bodies and the purpose Ash had whispered.

“Hnnngh!”

The penis that pierced her in an instant made its presence known in her lower abdomen. It was overwhelming as it got bigger and moved inside, but her head was filling with heat.

“Hnn, nghh!”

Her whole body burned, ached, and then suddenly went white before her eyes.

The sensation was sharp, as if her tight walls were being pried open, her innermost flesh clinging to the pillar of flesh that entered and withdrew, dragging even the outer folds with it.

“Hnn, hnnngh, ah…!”

Erin unconsciously scratched Ash’s back and writhed. It was a reaction from arousal, not pain. The heavy body that was pushing in until there was no more room made her toes curl. The unexpected side of her assistant, who was pressed against her and wouldn’t let her escape, kept setting her on fire.

“Haa, Doctor…”

Most of all, Ash’s attitude.

Erin was amazed that he seemed to have lost half his reason and was only focused on her body. His obsessive foreplay made her insides tremble. The roughness, but also the way his hips would press down and hold back whenever she flinched. The look on his face as he gritted his teeth, as if he had been waiting for this moment…

“Hnn, ngh!”

Erin finally groaned, feeling a thick, white fluid spreading inside her parted legs.

***

Chirp, chirp.

“Hmm…”

As always, Erin opened her eyes, groaning at the sunlight filtering through the gaps in the lab window. The only thing different from any other time was…

“…”

Unlike the times she would get up from her slumped position at her desk, feeling the stiffness in her neck and back, Erin woke up on a guest sofa in the corner of the lab.

‘Wait.’

A guest sofa?

‘We had something like that in our lab?’

This pathetic lab didn’t even have a spare chair for Ash, let alone a sofa for guests. Startled, she woke up to find herself lying on a truly plush, large sofa. It looked brand new, like it had just been bought, but it had none of the unpleasant chemical smell that new furniture often has. It was a soft, velvet sofa.

‘When did this even get here?’

As she raised her upper body in a daze, she felt a thick blanket that had been covering her. The refreshing scent of Ash emanated from the blanket as well.

‘Wait a minute. I’ve never seen this blanket before either.’

The texture and thickness were completely different from the cheap blankets she always used. The sofa, the blanket—no matter how she thought about it, they were items that didn’t fit in with this shabby lab at all.

“Why is something like this here…”

It was the moment Erin spoke in a daze.

Click.

The lab door opened, and a familiar figure appeared.

“You’re up.”

Ash had unbuttoned the first button of his shirt, which alone gave him a more relaxed look than usual. His thick glasses were nowhere to be seen. His hair, which was usually slicked back with pomade, had a few strands falling down today, making him look more at ease than usual.

‘That’s another look I’ve never seen before.’

Instead of being neatly groomed as he always was, he looked like he had just woken up and casually washed up.

‘Ah.’

Erin, who had been staring blankly at Ash, realized why he looked so disheveled and blushed.

‘…He slept here.’

Instead of going home as usual, he had slept and woken up in this lab. Just like Erin.

Because…

‘He had… done that sort of thing with me…’

As the events of last night came to her, a ticklish feeling ran through her fingertips.

“A–Ash… then, it’s over…?”

“No. I’ve only come once, Doctor.”

“Wh–what do you mean, only…?”

Because the two’s “trial” didn’t end with just one time.

Right after Ash first ejaculated inside her, Erin tried to pull away, thinking it was all over. She thought the goal had been achieved. Just feeling the thick fluid filling the space between her legs was enough.

“Haa, Doctor.”

“Hnn, ngh?!”

Ash grabbed Erin’s waist and pulled her back toward him. Then, holding onto Erin’s surprised body, he gently continued his hip thrusts.

“Ah, hnn, Ash! Ngh!”

Her body, already hypersensitive from climaxing once, was quickly set ablaze again as Ash’s thick shaft relentlessly pounded into her. It didn’t take long for her to near the edge once more.

“A-Ash… I’m… I’m comin’…”

“Yes. You’re beautiful, Doctor.”

“T-that’s not it, I’m, I’m comin’…”

Ash looked down at Erin with a loving expression and kissed her forehead several times.

“Isn’t it too soon to test for the possibility of pregnancy with just one time?”

“O-one time is en, enough… it’s enough…”

“You always said that a trial should be done from multiple angles.”

The memory of her helplessly swaying with Ash’s thrusts while listening to such whispers was vivid. At some point, she had blacked out and fallen asleep, so she had no idea how many times they had done it.

The last clear memory she had…

…was of Ash’s face as he used his fingers to press and push back the thick seed that had spilled out between her thighs, frothing as it overflowed.

“I went through the trouble of putting it in you, Doctor. Don’t let it go to waste.”

“…Hnn…”

“You have to swallow it all, Doctor.”

All of those scenes came back to her in a panorama, and Erin lowered her head and fanned herself with her hand. Thinking about it again, what she had done with her assistant was just ridiculous. Ash, on the other hand, looked perfectly normal, with the exception of his disheveled appearance.

‘Why does he look so normal, as if nothing happened?’

She couldn’t quite tell if his attitude was a good thing or a bad thing. She thought it was better this way, since things would have been awkward if he had acted self-conscious about last night, but she was also a little disappointed that after all that, the only signs were his disheveled hair and an unbuttoned shirt.

‘…No, that’s not right.’

Erin shook off her momentary disappointment with a wry laugh. When she thought about what she had been hoping for, it felt too absurd.

‘What would I even do if Ash became self-conscious of me?’

The two of them were connected by their experiment, and yesterday’s act was, after all, a clinical trial for the drug. If it weren’t for that, they would never have slept together.

‘So act like a researcher.’

After thinking that, Erin’s reason became calmer.

Even so…

“Would you like some coffee?”

When Ash approached her with a fresh smile on his face, her cheeks still involuntarily flushed. He was always kind, but today, his attitude felt especially so, and her fingertips tingled. Erin forced a smile and replied.

“Y-yeah, sure. I’ll have some.”

“No. You should have breakfast first since your stomach is empty.”

“Oh, um.”

Ash came closer and helped Erin sit up. Then he answered one of her questions.

“I brought the sofa from the professor across the hall who was going to throw it away.”

“Huh? Across the hall?”

Across from Erin’s lab was a large research facility where doctors with much more funding than her worked.

“Yeah. They said they weren’t using it anymore… Oh. You can be at ease; I cleaned and disinfected it thoroughly before bringing it in.”

Erin nodded blankly.

‘Just how much did he scrub it for it to feel so brand new?’

Ash was truly good at everything.

“Anyway, just sit down for a little while longer. I’ll go make breakfast…”

“Wait a minute. You must be tired if you carried the sofa by yourself.”

“I’m fine.”

“No, you’re not. Let’s just go out to eat…”

But as Erin tried to stand, she felt something trickle from between her legs. She was dazed for a moment before realizing what it was. Her face felt like it would explode.

‘This is, so…’

Last night, Ash…

The image of Ash looking at her with a dazed face as he thrusted semen into her, as if he were ambushing her, came back to her in an instant. She unconsciously bit her lip, and Ash’s hand casually went to her groin.

“Ah!”

“Oh my.”

Ash’s hand, which had casually swept over her thigh, had a half-transparent white liquid on it. Erin was so shocked that she couldn’t even make a sound, she could only blink her eyes.

“I thought I put it in well.”

“…”

“But it seems to have leaked out anyway.”

At Ash’s words, Erin instinctively squeezed her eyes shut. She felt like last night’s events were about to repeat themselves. 

‘Was Ash going to do that again?’

Thump, thump, thump.

Her heart was trampolining in her temples. She had just woken up; were they going to do it again? She should have been mortified, but instead, an unnecessary sense of anticipation welled up.

‘I just decided to think like a researcher again.’

But this… no matter how she looked at it, it wasn’t her fault. If only Ash didn’t look at her like that…

Her mind was a jumbled mess.

“It can’t be helped.”

What she felt next wasn’t the large, warm hand moving closer to lay her down, but…

Squeak. 

A pathetic-sounding squeak from the lab door opening, accompanied by a voice that sounded disappointed.

“…Ash?”

When she opened her eyes again, Ash was already dressed and ready to go. He even took her coat and put it on her.

“Uh…?”

“We’ll have to go out for breakfast, just like you said.”

“Suddenly? But I’m…”

‘In this state?’

Erin was horrified. She had absolutely no intention of walking around with Ash’s… fluid… leaking from her. Ash looked at her trembling body with a strange gaze.

“You’re telling me to go out like this…”

Erin puffed out her cheeks, about to accuse him of having a strange fetish.

“…This lab doesn’t have a shower, Doctor.”

“H-huh?”

“It would be too difficult to walk around like that all day. We have to clean up.”

“Oh…”

“And since the only place to wash up is the public restroom on the first floor, I can’t have you clean up there.”

At his next words, Erin’s eyes widened again. So…

“You’re going to… clean me up?”

“…”

Ash smiled strangely at her words. His eyes seemed to imply, ‘You wouldn’t think I’d be against that, would you?’ Erin, feeling a little flustered, looked away and stammered.

“N-no, I didn’t mean that. I thought you…”

‘I thought he would want to keep it from leaking…’

Since he had said so himself and even pushed it back inside her, she thought he would want to keep it from coming out. As she held back these words with her last bit of reason, Ash gave her a languid smile, as if he had read her mind.

“That can’t be helped, though.”

“Huh?”

“After all… it’s not like this is the last time.”

Ash’s words trailed off, and he stepped closer to her. As he slowly reached between her thighs to clean up the mess, Erin let out a hiccup. Ash opened his mouth, his eyes still holding that strange expression.

“You can’t walk around like this. What if you run into some scumbags like yesterday?”

“Yesterday… ah! Right!”

Now that she thought about it, the man Ash had beat up was…

“Come on, Doctor.”

But Erin’s thoughts were interrupted. Ash grabbed her hand and led her out of the lab.