The Line Blurs
Time flew by, and before I knew it, March had arrived.
Slap! Slap! Slap! Smack!
Eunhye was on all fours, gripping the bed as I thrust vigorously between her thighs from behind. Every so often I brought my palm down on her ass, leaving red handprints that looked irresistibly erotic.
Her anus came into view whenever I spread her cheeks. Below it, my cock slid back and forth, roughly scraping along her slit. The fluids coating my shaft dripped onto the floor, but just as much trickled down her pale thighs. The ground beneath us was already soaked with scattered stains from earlier.
Slap! Slap! Slap!
“Ah! Haaang! Ngh! Ngh!”
“Keep your hips up—don’t lower them! Why did you stop moving your hands? Keep playing with your breasts!”
“Hng! Ah! Ah! Jin… su! I… I’m—! Ah!”
“Kuh! I’m about to come too!”
“Hwaaang!!”
For the first time in a while I came as well, reaching climax together with her. Eunhye sprayed her fluids downward while I painted her ass with thick ropes of semen.
Once I finished, I carefully lowered her hips as she collapsed forward onto the bed, then buried my cock between her cheeks and slowly dragged it along her skin to wipe off the remnants.
After patting her ass and letting her ride out the aftershocks, I moved around to her face. When I pressed my cock against her lips, she closed her eyes but obediently opened her mouth, sucking me clean and swallowing the leftover cum and her own juices.
Once she finished, Eunhye weakly buried her face against my crotch. I reached down, scooped up the semen I’d left on her ass with my fingers, and collected it in my palm. After gathering a generous amount, I lifted her face and brought my hand to her mouth.
“From today on, you’ll lick it all up with your tongue.”
“Ugh… Fine.”
She grimaced at my words but obediently stuck out her tongue, scooped up a bit of the cum, and swallowed it.
Until yesterday I had been feeding her my cum little by little on my fingers, but today I took it one step further—making her lap it up like a dog.
She had shown massive resistance the first time I made her eat cum off my fingers. She kept saying no, but after my persistent instructions she eventually began sucking the cum from my fingers. Now she had been trained to lick it straight from my palm.
Her resistance was almost nonexistent compared to before. Though her expression remained displeased, she seemed aware that the act excited her too; a faint blush colored her cheeks as she occasionally glanced up at me.
Lick. Lick. Lick. Lick.
I waited, feeling her tongue occasionally brush my palm, until she had licked up every drop. Only after she had thoroughly cleaned my hand—licking and sucking every last bit—did she speak.
“Ugh… I hate cum…”
“You did well. From now on, whenever I bring it to your mouth, you’ll lick it just like today. Understood?”
“Uuu… I’d rather just give you a blowjob…”
“Heh. Don’t hate it so much. If you keep tasting it, you might start to like it.”
“Never…”
I chuckled at her reaction to my own ridiculous words. Having successfully introduced another layer of training today, I grabbed a wet wipe and handed it to her.
Eunhye wiped her legs, crotch, and between her cheeks clean before getting dressed. I cleaned the saliva off myself as well, put my clothes back on, and sat on the bed.
She climbed onto my lap with practiced ease and nestled against me. After sharing a kiss to savor the lingering warmth, I suddenly remembered something I had forgotten.
“Ah! Team Leader, I have something for you.”
“Hm? What is it?”
“Could you grab that paper box on the desk?”
“That? What’s in it?”
“A present~ for~ you~”
“Huh? What is it…? Eh? This is…?!”
When Eunhye opened the box, her eyes widened in surprise. Pleased by her reaction, I proudly explained how much effort it had taken.
“Do you know how hard I worked to collect all of these? Good grief, there are so many different types of cosmetics! And the colors are endless!”
“D-Don’t tell me you went through my pouch?!”
I had secretly taken her pouch, photographed its contents, then visited every store asking the staff to match each product exactly. The women behind the counters were impressive—taking one look at the photos and immediately fetching the right items.
“Ah… I really don’t know what to say. Thank you, Jinsu.”
“You have to fix your makeup every day because of me. This much is the least I can do. If you need more, just say so. Or if there’s anything you’ve been wanting, I’ll buy it all for you!”
“This is already more than enough… Thank you so much, Jinsu.”
“Don’t feel burdened. After all… you’re my woman, Team Leader.”
“Pfft. You really say the most shameless things to a married woman. Mwah!”
Even after months of training, Eunhye still drew a firm line. She refused full sex, enduring everything else while insisting she could never betray her husband by allowing penetration.
Yet aside from actual intercourse, she no longer showed strong rejection toward light teasing or dirty talk, so conversations like this came easily.
Unable to hide her joy at the gift, Eunhye set the box aside on the bed and climbed back onto my lap, hugging me and initiating a kiss. We continued kissing until the bell signaling the end of lunch break rang, then finally parted.
It was the first time we had returned to the office this late.
Perhaps because of the gift, the distance between us felt even closer after that day.
Eunhye began approaching me first, actively accepting my caresses. She hid her distaste as much as possible while licking up my cum and giving thorough blowjobs, and even took embarrassing, perverted positions I requested—though she did so with visible shame.
Whether in my office in the administrative building, the company hallway, the design team’s office, or the warehouse, she no longer twisted away or pushed my hands off when I touched her body over her clothes. She accepted my touch quietly, nervously checking for anyone approaching in my stead, and honestly shared how she felt to please me.
As Eunhye changed, I became more careful with her in return, actually reducing our physical contact in open areas of the company. I secretly checked her belongings, listened to her stories, and subtly asked about things she wanted, committing them to memory.
Our relationship, which had been at a standstill for months, took another step forward. The way we touched each other became as gentle and careful as lovers, yet we explored one another with the intensity of sex.
Every day we grew closer. On days when our love for each other felt especially strong, we didn’t hide our possessiveness. As the end drew near, we held each other, sharing warmth, and trembled with indescribable emotions.
Time passed again, and April arrived.
During the season when spring was in the air and cherry blossoms bloomed, I slowly increased my marks on Eunhye one by one.
I replaced her everyday bag with an identical new one. Her usual shoes were swapped out too. Her cosmetics, perfume, and accessories like bracelets—starting with things her husband wouldn’t easily notice—were gradually replaced with items I had bought.
Fortunately, most things could be purchased online. Whenever I had time, I sat her in front of the computer I had installed in the warehouse and had her repurchase the clothes she was wearing, one by one.
At first Eunhye protested that she couldn’t accept it, but after I carried her to the bed, fingered her, and roughly thrust my cock against her neck, she obediently accepted my possessiveness and added the items she had previously bought to the cart.
Even her socks and the underwear she had stubbornly refused to replace were all renewed. I collected and discarded every old item.
When Eunhye saw the bra and panties she had just been wearing go into the trash bag, she silently picked up matching new ones from the pile I had bought and put them on. The rest I loaded into her car on the way back to the office.
That month was busy. I had to satisfy and train Eunhye while also resting and talking with her.
I replaced everything from head to toe with items I had purchased. Afterward, she continued accepting my gifts without complaint—new cosmetics, perfume, socks, hair ties, and modest accessories that her husband wouldn’t know about.
She was still cautious about clothes and anything too obvious, saying no at first, but one by one she inevitably accepted my presents. Though she felt guilty, she was grateful, and as a result she followed every instruction during lunch without protest.
I forbade her from wearing pants to suit my tastes. She was not allowed to use menstruation as an excuse—she had to wear a skirt every day. The variety of her skirts gradually increased.
Together we picked out tops online, adding styles I liked, and ordered them so she could wear them to work. Her husband had asked at first if she had always owned such clothes, but in the end he never noticed.
Even the mid-range brand bag I had recently replaced was swapped again. It was a similar color but completely different texture. Her husband didn’t notice even when it was a noticeably more expensive brand.
Honestly, it was a brand I had never heard of either, so I wasn’t surprised he missed it. Isul noticed immediately, though.
Her usual bracelets, earrings, and occasional necklaces were all replaced as well.
Eunhye agonized over the choices, but to my male eyes they all looked similar. Women, however, noticed right away, and the design team’s group chat buzzed all day about her new accessories.
While enjoying the pleasure of gradually changing her, I stripped off the clothes and underwear I had bought her, then caressed her thoroughly. I brought her to climax and watched her body tremble, made her pose in lewd positions to suck my cock, and had her hold my cum in her mouth until she swallowed it despite her discomfort.
After fixing her makeup with the cosmetics I had given her and putting on the clothes I had bought, Eunhye finished getting ready. Holding her in my arms and chatting felt incredibly satisfying and joyful—seeing how thoroughly she had been marked by me.
It became a kind of game. Would her husband notice how drastically she had changed? How far could he remain oblivious? This? That? I subtly tested just how much he loved and paid attention to her.
What started as a sudden whim on my part soon had Eunhye actively participating.
While resting and talking after our heated sessions, whenever she complained that he still hadn’t noticed, I secretly smiled, realizing the gap between her and her husband was widening—creating more space for me to slip in.
Having steadily expanded the boundaries she accepted, I even had her straddle me naked during our morning kisses so we could kiss face-to-face.
She kissed me deeply while I squeezed her bare ass. Then I would have her lean against the wall, crouch behind her, and eat her out until she came lightly first thing in the morning. It became routine.
Eunhye used to complain about getting wet so early, but after cleaning up from her light orgasm she no longer grumbled. Before leaving my room she would give me an affectionate peck.
In the evening we kissed again—deep, passionate kisses with her straddling me face-to-face.
No longer afraid of exposure, Eunhye always let her breasts and ass be fully exposed, surrendering her body to my hands. Going further, she would even remove her pants, straddle me, and grind her slit against my cock, enjoying the smata herself.
Her movements were still clumsy as she rubbed herself on me. Whenever my cock accidentally slipped partway inside, she would flinch and lift her hips—yet she also seemed to secretly crave the sensation of the glans pushing in, repeating the motion of lowering and pulling away.
When she grew tired she would simply sandwich my cock between her cheeks and rub. Reaching climax on her own, she would drench my crotch with her fluids, marking her territory.
After savoring the afterglow, Eunhye would climb down, lick and suck the juices she had left on me, then clean my body with wet wipes before tending to herself.
Once she wiped down and fixed her clothes, we shared a brief kiss and went our separate ways home. That was our daily routine.
Though outwardly the same, our relationship had grown much deeper, and it felt like there was very little left between us.
Moreover, feeling guilty that I wasn’t climaxing during our morning and evening sessions, Eunhye had begun allowing most of what I wanted. Recently, even this had become possible.
Thrust. Thrust-thrust! Thrust!
“Hah! Ah! Jinsu! You… you can’t put it in! Hng! You know that, right? Ah!”
“Team Leader, don’t move! Stay still!”
Eunhye sat naked on the bed, back against the wall, legs spread and held open by her own arms as I had instructed. Kneeling in front of her, I held my cock and rubbed the glans up and down her slit, repeatedly pushing just the tip inside before pulling out.
Through consistent smata I had been gradually working the glans in and letting it pop back out. Eunhye had tacitly allowed the tip to enter, and today I was openly doing it right in front of her—inserting only the glans and withdrawing again and again.
“Today I’m only going to put the tip in. Sit on the bed and spread your legs.”
“Eh…?”
“This much is fine, right? I absolutely won’t go deep enough for it to count as sex. So…?”
“U-um… okay…”
“You’ll do it?”
“Y-Yeah…”
When I stated the position so confidently, Eunhye looked slightly flustered. She had been tacitly allowing it, but having me declare it outright made her hesitate. Still, she soon agreed and spread her legs, holding them open with her hands.
With her permission, I positioned myself in front of her pussy. Like Pavlov’s dog, her slit was already dripping with arousal. I began scraping the glans up and down her folds, and Eunhye trembled slightly, letting out soft moans.
Holding my cock with my right hand, I pressed firmly between her outer lips and rubbed. Whenever I passed her entrance, the glans would catch between her inner lips and push inside with the same force I was using.
“Hngh! Haa…!”
The moment the glans pierced her entrance I pulled my hips back before it could go deeper. Her pussy, which had taken the tip dozens of times already, had already begun to reshape around the head of my cock.
The perfectly fitted pussy clamped down with powerful suction the instant the glans entered, so I had to pull out quickly.
After all, it was my pussy now—I could thrust in and out as many times as I wanted.
The moment the glans slipped out I thrust again, repeating the shallow insertion and withdrawal.
As I continued the pistoning motion, Eunhye let out pitiful moans and unconsciously pushed her hips toward me. When she did, I used my right hand to push her crotch back, telling her not to move, then resumed rubbing and shallowly penetrating her with the glans, teasing her relentlessly.
With my left hand I pinched and twisted her nipples, making her squirm with pleasure. Even while doing so, she kept her trembling arms holding her legs spread exactly as I had ordered—a clear sign she had been thoroughly trained.
“Haaang! Ngh! No! Hic!”
“If you move, my cock will go all the way in.”
Eunhye’s moans filled the room. No longer holding back her voice, she was loud enough that I had to close the secret room’s door to muffle the sounds.
This place had become a hidden chamber no one else knew about. The fact that Eunhye came here every day, completely unguarded, was practically an admission that she was coming to be fucked.
For the day—whenever it might come—when she could no longer resist her own lust and begged me for my cock, I thrust my hips with renewed vigor, continuing the smata.
Of course, I wasn’t a machine—I couldn’t keep inserting only the glans forever.
But since that had been the goal of this position from the start, it didn’t matter much. Eunhye couldn’t stop me either, not while struggling to maintain the spread-leg posture.
More accurately, it was another tacit allowance on her part.
Though I had promised only the glans, I occasionally let the upper part of the shaft slip in before pulling out. Surprisingly, in this position it was actually me who was still respecting the boundary.
I had chosen this posture because I wanted to be inside her more, but not today. I intended to take it slowly, teasing her until she had no choice but to accept full penetration—rather than satisfying my own greed in a single day.
If that had been my plan, I would have raped her the very next week instead of enduring months of restraint.
Looking further ahead, I had endured and waited. Out of sheer spite, I was determined to hear surrender from Eunhye’s own lips.
That was why I kept pushing her hips back into position with my right hand whenever necessary, continuing to thrust with only the glans—or at most the upper part of the shaft—barely entering.
Eunhye watched my cock push in and out, deliberately ignoring the rule she herself had set against sex. Little by little, she was tearing down the wall she had built and accepting me.
“Hngh! Hnnngh!”
Today as well, Eunhye came hard, drenching my crotch with her fluids. I pulled her into my arms as her arms gave out and gently stroked her back.
“Only once today. Still felt good, right?”
“Hah… hah… Yeah… hah…”
“We’ll stop here for today. I don’t think I can hold back anymore. Is that okay?”
“Mm… yeah… hah… hah…”
I held Eunhye and kissed her after her orgasm. We spent the rest of our time talking and kissing until it was time to leave the warehouse.
Starting in May, our sessions were no longer just smata but full contact between our genitals—rubbing and shallow penetration right on the verge of actual sex.
Mostly in missionary position. When I wanted to torment her, from behind. On days I felt like something different, cowgirl. We continued walking this precarious line.
Then one day—
Thrust! Thrust! Thrust! Thrust!
“Hah! Hah! Hah!”
Eunhye straddled me as I lay on the bed. Both hands braced on my chest, she was grinding her soaked pussy against my fully erect cock.
Moving her hips on her own, she rubbed her dripping slit all over my crotch and shaft, lost in her own world.
From root to glans, she dragged her pussy along the entire length again and again. Whenever the glans caught at her entrance she would flinch, hips trembling, and pause—only to resume grinding after a moment.
She looked strangely happy. But this wasn’t the position I had in mind today.
“Alright, if you’ve rested enough, get back into position.”
“Hah… hah… O-Okay…”
At my words, Eunhye began lifting her hips. My cock, freed from her weight, sprang up and stood rigidly toward the ceiling. She spread her legs wide so her pussy was fully visible and slowly squatted down. Her thighs trembled until her knees were nearly at right angles. Only then did my glans touch her entrance.
I placed my hands on her ass to guide her, then reached up to grasp both her nipples. Pulling them gently, I spoke.
“Hngh! Haaang!”
“Now, slowly lower yourself… and rise again~”
“Hngh! Hah… hah… It’s hard…”
Eunhye, still lacking stamina, struggled even with a single up-and-down motion. Of course, we had already been repeating the movement for a while, and even for a man this position required consistent training to maintain.
Still, I smiled and tugged her nipples upward, encouraging her to sink lower.
“Come on~ lower yourself~”
“Hngh! Jinsu! I-It’s going in!”
As her strength waned, Eunhye tried to lower herself further but panicked when my cock began to enter, attempting to stand back up.
Normally we had only inserted the glans and occasionally gone a little deeper, but in today’s position I could push in at least a third of my length. Eunhye, too exhausted to protest, simply let it happen.
Rather, once a third of my cock was inside her, she trembled and savored the sensation of being filled, her inner walls squeezing and urging me deeper.
When instinct made her wiggle her hips to take more, I supported her ass and lifted her back up.
After a brief rest, the pull on her breasts brought her down again, repeating the cycle.
Caught between physical exhaustion and pleasure, Eunhye’s judgment grew hazy as lust flooded her mind. Fluids leaked from where our bodies joined, soaking my crotch.
Her reason resisted and protested verbally that it wasn’t allowed, yet she couldn’t bring herself to pull away. All she could do was hover at that precarious height. Even so, my cock sank deeper with every repetition because I was thrusting upward to meet her.
Finally, nearly half my length disappeared inside Eunhye’s pussy.