Her Monthly Secret
Then came the weekend. The cashed-out profits landed in my account.
I loaded Iseul and Byeol into the car and spent the day touring the properties I’d scouted during the week. We mixed in some sightseeing and local attractions along the way.
Most of the viewings were probably boring for Byeol, but I felt a little guilty anyway. Iseul and I checked out apartments, officetels, and commercial buildings, studying the surrounding commercial districts and any upcoming developments.
Iseul wasn’t exactly an expert either, so the two of them were mostly just excited about the idea of possibly getting a new place. In the end, I was the one asking the real estate agent all the questions. Since we’d framed the trip as a family outing, I didn’t push Iseul to make any big decisions.
We didn’t stay overnight. We just enjoyed the sights, ate good food, and spent the weekend together.
Ninety-four billion won in cash. It was my money, yet the sheer amount still didn’t feel real. Was this what it felt like to become a billionaire overnight? The sense of unreality was strong, but I accepted it quickly.
Back when it first happened, I used to withdraw cash from ATMs just to make sure the money was really there. I’d worried that I might wake up the next morning to find it had all been a dream, or that the police would suddenly show up and seize it as illegal funds.
Now that things had stabilized, I could finally enjoy a relaxed weekend outing with my family.
After Byeol, exhausted from running around all day, fell asleep, Iseul came to my room. We spent the night together. Sunday passed in the same lively fashion, and before I knew it, Monday arrived.
I had more than enough money and no desire to go to work. The thought of quitting crossed my mind, but I muttered that I was enduring it for Eunhye’s sake and wondered how I should train her today.
In the morning, I met her, kissed her, asked how her weekend had been, and gently stroked her ass while she told me about the camping trip. We parted with a promise to meet later. After lazily handling the morning’s work, lunchtime arrived.
Eunhye opened the warehouse door and stepped inside. When she approached the bed where I was sitting and I moved to embrace her as usual, she blocked my hands.
“W-wait a second, Jinsu.”
“…? What’s wrong?”
“Um… Could we just… not do it today?”
“What?! Why?”
Eunhye suddenly raised her guard. Startled, my voice came out a little louder than intended, and she shrank back slightly.
Had something happened over the weekend? She hadn’t said anything this morning. Had I been too relaxed with her training? Should I have pushed for sex sooner? Why was she refusing now?
While I was puzzling over it, Eunhye fidgeted under my gaze before letting out a long sigh, her face turning bright red. In a tiny, shrinking voice, she said,
“I-it’s… I started my period today…”
An exclamation mark seemed to pop up in my head. Now that she mentioned it, we’d been doing it every day lately, so it made sense that her cycle would come around. So this was how I ended up learning her period schedule.
Realization, followed by a hint of relief, made me blurt out something stupid without thinking.
“Ah…?”
“Mine’s… pretty heavy…”
“I-I see. If it hurts that much, there’s nothing we can do.”
“That part’s fine, but… I produce a lot of discharge, you know? So… it comes out a lot.”
“……”
“……”
The sudden TMI left me flustered again. She really didn’t have to go into that much detail.
Eunhye seemed to realize it too after speaking; her face flushed all the way to her ears as she lowered her head. Had she said it without thinking, or was she… enjoying the embarrassment?
Should I test that today?
“Ahem. I understand.”
I cleared my throat and calmed myself. If I showed her I was flustered, it might damage her trust in me. To stay above her, I always had to appear composed.
Eunhye kept her head bowed, face crimson. Watching her, I painted a leisurely smile on my face. Though I’d genuinely been surprised moments ago, the plan that had just occurred to me filled me with real excitement, and my heart settled naturally.
“Is that really true? You’re not just saying that because you don’t want to?”
“N-no. I wouldn’t lie to you, Jinsu. It’s true.”
“Hmm~ I’m not sure. Then would you prove it to me?”
“P-prove it…?”
Startled, Eunhye lifted her head and looked at me.
Her face was bright red as she repeated what she’d just heard, as if to confirm.
I nodded.
“Shall I undress you? Or would you rather take them off and show me yourself, Team Leader?”
“R-really?”
“Would I lie about something like this? Come here. I’ll undress you and check today.”
“W-wait, Jinsu! Really! I’m telling the truth! Kyaa!”
The moment I spoke, I stood up and caught Eunhye as she started backing away. I swept her into my arms, carried her into the room, and laid her on the bed.
Surprisingly, Eunhye didn’t resist much. She only curled up, covering her face with both hands in embarrassment. When I tried to pull her pants down while she lay there, she gasped and sat up, grabbing my hands with both of hers.
“I-I’ll do it, Jinsu!”
“Oh? All right. Then would you take them off and show me?”
“D-do I really have to? I’m so embarrassed…”
“Come on! We’ve already done everything there is to do together. Why are you acting like this, Team Leader? Should I do it instead?”
“Haa… What am I even doing…? Just don’t touch it, okay? Promise me. I might really cry if it gets too much.”
“Haha. Yes, I promise. Please take them off and show me, Team Leader.”
“Whew… You promised, okay…?”
After hearing my confirmation, Eunhye sighed and reached for her pants. Muttering “What am I doing?” she finished unfastening them, hooked her fingers inside, and slowly pulled them down.
Her pale ass came into view first. Lifting her legs to remove the pants, she paused halfway down her thighs.
Her hands trembled, eyes squeezed shut, as if showing her period-stained pussy was too difficult.
While she was distracted, I pushed her legs toward her body, folding her. Eunhye let out a cute yelp, and I held her in place with her ass pointed toward the ceiling. I brought my face close to her pussy.
Her panties had just been removed, revealing her hot pussy. Just as she’d said, her period had started; a faint reddish tint was visible. The sanitary pad stuck to the center of her high-waisted panties already showed traces of red blood.

“J-Jinsu! What are you doing?! It’s embarrassing! Really!”
“You’re leaking a little. When did you change your pad?”
“W-what?”
“Your pad.”
“…Before lunch.”
“I see. So your period just started?”
“…Yeah. Can you please stop asking? It’s embarrassing.”
“Haha. All right. But I’ll look a little longer.”
“Ugh… Don’t touch it, please.”
Eunhye asked, but I was already using both hands to spread her pussy open. Even though it was only the beginning of her period, blood was already visible. Just as she’d claimed, her flow seemed heavy.
But most of what coated the pad and pooled in her pussy wasn’t blood. Blood didn’t stretch in sticky strands like this.
It was her arousal fluid, mixed with menstrual blood, overflowing from who knows when she’d gotten excited.
Watching the sight, I smiled wickedly behind her hands-covered face, then released her.
I slowly lowered her legs and helped her back into her panties and pants. Still covering her face, she lifted her hips slightly to assist. Once dressed, she slipped into my arms beside me and buried her face against me.
“You’re really mean, Jinsu.”
“I wanted to see. I want to know everything about you, Team Leader.”
“Still… you didn’t have to see this. I’m a woman too, you know?”
“Isn’t that exactly why it’s better?”
“Ugh… You’re such a pervert.”
“Haha. As promised, I won’t do anything today. Just rest.”
“Thanks. And… sorry I couldn’t help. You must be frustrated too.”
“It’s my personal issue. You’re the one helping me, Team Leader. I’m always grateful.”
“Yeah…”
I held Eunhye in my arms. My right hand stroked down her head and back, rewarding her for indulging my selfishness.
Receiving the warm embrace and caresses she hadn’t felt in a while, Eunhye hugged me back and burrowed deeper. Her full breasts pressed against my chest, and her sweet body scent filled my nose.
Relieved that nothing more would happen today, Eunhye gradually surrendered to the rare post-meal drowsiness and drifted off to sleep.
Once I heard her steady breathing, I carefully placed my right hand on her ass and patted it lightly, matching her rhythm so as not to wake her. After confirming she was asleep, I covered her ass with my hand and began gently stroking it.
“Mmmh…”
She reacted slightly but didn’t wake. I stroked and kneaded her ass softly, checking if she would stir.
“Mm… Mmmh.”
Stroking her as if tickling, then giving a light squeeze without waking her, I repeated the motion on her thighs as well. Even in her sleep, Eunhye seemed to feel it; her thighs rubbed together.
Satisfied with her response, I continued the teasing caresses on her now clearly more developed ass, enjoying her sleepy murmurs while occasionally touching her waist and the space between her thighs, steadily developing her erogenous zones even during sleep.
Then the alarm rang, and Eunhye woke.
“Hwaaaah… Is it already time…?”
“You’re awake? Chu!”
Peck! Kiss! Peck peck!
I kissed Eunhye, who had just woken from her short nap. While squeezing her ass that I’d been teasingly kneading, I pulled her waist close.
Still half-asleep, Eunhye hugged me back and accepted the kisses. After a brief moment of mutual exploration on the bed, we got up. Stretching, Eunhye spoke.
“Haaa. I feel like I slept well for the first time in a while.”
“Feeling good?”
“Mm~ Maybe~ Hehe.”
She stood up while still in my arms and did a light stretch. Then, as if realizing the stimulation from earlier had worked, her face suddenly flushed and she avoided my gaze.
“I-I’ll get going then!”
“See you later~”
“Y-yeah!”
Looking suddenly uncomfortable, Eunhye quickly left the warehouse. I smiled and saw her off, already guessing what was happening.
From then on, whenever I met Eunhye, I made a point of focusing on her ass.
During our morning kisses, I stroked the ass of Eunhye sitting beside me. In the evening, when we kissed, I kneaded her bare ass and gave it light slaps, enjoying how she trembled.
Sometimes in the hallway, after making sure no one was around, I’d slip an arm around her waist, stroke her ass, and subtly touch her breasts. Every time I harassed her like that, Eunhye glared at me, but I didn’t yield and kept up the teasing stimulation.
Eventually she started hitting me on the head or pinching me, and before leaving work she even bit my lips during our kiss.
Of course, I got my revenge by grabbing and squeezing her breasts and ass even harder, intensifying the caresses until her legs wobbled as she headed home.
The next day, Eunhye clung to me from the morning kiss onward, noticeably different from usual. When I hugged her lightly as always and stroked her ass, she flinched.
With her desires unfulfilled and only building up lately, Eunhye hugged me tightly and continued the kiss herself, pretending otherwise while craving affection. Her body pressed closer, her tongue reluctant to end it, and when I stroked her ass in response, she showed no sign of wanting to leave.
But satisfying her with just kisses and skinship would take too long, so she eventually left, still ambiguously aroused.
Smiling at the reluctant Eunhye, I finished my management team work and headed to the fashion design team. At her desk hidden behind the partition, I touched her breasts—specifically her nipples—over her clothes before leaving.
Her face bright red, unable to speak, I kept drawing circles on her nipple area with my index finger until she finally pushed me away.
But lunchtime, which she couldn’t escape, arrived. Seeing Eunhye enter the warehouse with a flushed face just like yesterday, I suppressed a laugh inside.
Just one day skipped, yet her libido exceeded my expectations. Smiling wickedly, I greeted her.
“Welcome, Team Leader.”
“You… You were careful at the company, right? What if someone saw?!”
“Haha. Of course I checked everything. Don’t you trust me?”
“Ugh… Even so… There are CCTVs… You never know!”
“CCTV? Haha. As far as I know, the one in the director’s office has its monitor turned off. He doesn’t check it.”
“Ugh… Anyway, stop it. Please.”
“How can I resist when Team Leader is so pretty? Hehe.”
“Ugh. Don’t say gross things like that. It gives me goosebumps.”
“Ha. Haha. Shall we go this way?”
After a brief greeting, Eunhye and I entered the room. I patted the bed with my hand, signaling her. Letting out a deep sigh, Eunhye sat beside me and lowered her head.
“Why… Are you going to look again today?”
“Why? Don’t want to show me?”
“Of course not! I-it’s embarrassing!”
“Hehe. Hurry up and take them off to show me.”
“U-ugh…”
“The more embarrassed Team Leader gets, the more turned on I become, you know?”
“Ugh! You really are a pervert.”
Despite her words, she looked at me with a hint of anticipation. I stopped her from sitting on the bed, made her stand in front of me, brought my face to her crotch, and said,
“Today I want to undress you myself. Is that okay?”
“Haa… Do whatever you want.”
“Hehe. Then I’ll undress you.”
In a resigned voice, Eunhye removed her hands from her pants and placed them on my shoulders. Contrary to her words, she seemed even more excited at the thought of me undressing her; I could feel her focus entirely on the hand stroking her ass over her clothes.
I stroked her ass and pussy over her pants for a moment, enjoying her reaction, then unbuttoned and unzipped them.
Sliding my fingers into the waistband, I began pulling them down slowly. They caught briefly on her voluminous ass, but with a little force I slid them over the firm curves, revealing panties of the same style as yesterday but a different color.
To heighten her shame, I left the pants caught around the middle of her thighs and stroked her ass and pussy over the panties again. Bringing my nose close, I inhaled her slightly fishy yet sweet scent, then hooked my fingers into the panties and pulled them down.
The panties stretched smoothly over her ass and down to her pants. Just like yesterday, red traces and sticky strands connected the sanitary pad to her pussy before breaking.
I watched for a moment, then brought my mouth to her clitoris and began kneading her ass with both hands.
“Hng! W-wait, Jinsu! Ah!”
The refusal lasted only a moment.
Eunhye placed her hands on my head, pulling me closer instead of pushing me away. I worked my tongue diligently, nibbling lightly while stimulating her clitoris. I squeezed her ass with all my strength, spreading it apart, then kneaded it in circles up and down.
“Hng! Ah! Ah!”
Her moans of pleasure spread without hiding her arousal. Unable to hold back after going so long without oral, Eunhye trembled on her legs and accepted my tongue, releasing sweet moans at the long-awaited pleasure.
When my tongue moved slightly downward toward her pussy, there was a faint metallic taste—different from usual. It wasn’t unpleasant, but since I planned to spend a more intense time with Eunhye today, I only teased her thoroughly before standing up.
“Haaa…?”
Eunhye looked up at me as I suddenly stood, breathing faintly. Her expression asked why I’d stopped, though she would deny it. So I had to make her admit it herself.
To make her overlook, accept, and even desire deeper intimacy.
In front of Eunhye, I unfastened my pants. Stripping down to nothing in an instant, I showed her my cock—something I hadn’t shown her yesterday—and rubbed the glans against her clitoris. Whispering softly into her ear as she stared fixedly at my cock,
“Stay still, Team Leader. I’ve been pent up too, so I’ll only do a little.”
“Hng… Ah…!”
Covering her mouth with both hands, Eunhye watched as my cock slowly pushed between her thighs. I stroked her head briefly, then grabbed and kneaded her ass with both hands again.
Slap! Slap! Slap! Slap!
My cock, now slick with Eunhye’s arousal fluid from her excitement, slid smoothly back and forth in front of her pussy. Holding her ass, I pulled her toward me as if having sex, pushing my cock in, then pulling back, repeating the motion.
It was a position she would never have allowed before her period, fearing I might actually penetrate her. But the pent-up lust prevented the words “stop” from leaving her mouth.
With both hands covering her own mouth, Eunhye watched below with trembling eyes, her body shaking and exhaling hot breaths with every movement I made.
“Hng! Haa. Haa. Ha…”
Whenever my cock and glans scraped pleasantly against her pussy, Eunhye’s arousal fluid coated it generously, signaling her satisfaction.
The height difference made the position awkward, but I endured the half-squatting stance and kept moving my hips, encouraged by her pleasurable moans.
Before long, she was wet enough that insertion would have been effortless, and Eunhye’s expression was full of anticipation, believing I would do anything. But unfortunately, this was as far as we went today.
When I stepped back, putting distance between us, Eunhye let out a dazed sound.
“Huh?”
“I can’t be too selfish, can I? You should rest a bit before going.”
“H-huh?”
Eunhye alternated between staring at my cock, now slick with her fluids and slightly reddened, and at me, looking flustered. Meanwhile, I smiled and wiped between her legs with a wet tissue, pulled her panties back up, cleaned my own cock, and put my pants back on. As I finished dressing, Eunhye, who had been standing there dazed, let out a regretful sigh and began straightening her clothes.
Afterward, I took her to the bed, laid her down with my left arm as a pillow, and stroked her ass with my right hand. Eunhye flinched, then subtly pushed her ass out, rubbing it against my hand in dissatisfaction.
When I noticed and smiled, her face flushed slightly. Kissing her forehead, I said,
“You must be tired. Sleep a little.”
“Yeah…”
At my words, Eunhye forced her eyes closed. She tried to pretend to sleep, but couldn’t hide how she reacted to the hand patting her ass. Unlike yesterday, there was no need to be overly cautious since she wasn’t sleeping.
With weak yet clearly mischievous movements, I kneaded her ass. When I stroked her thighs and waist as well, Eunhye couldn’t hold back and responded by gently shaking her ass. Pushing it slightly backward as if asking for more, I smiled and caressed it softly.
“Haaa…”
Unable to endure the repeated stimulation, Eunhye eventually exhaled hot breaths and opened her eyes. Meeting her moist gaze, she naturally leaned in for a kiss. I accepted it, and our tongues began to intertwine. Holding her head with my left arm, I sucked on her saliva and mixed our tongues.
With my right hand, I massaged her ass as she wanted, kneading it with all my strength until it trembled. Until the end of lunchtime, we shared a long kiss.
Eunhye left the warehouse in a hurry, her legs slightly weak just like yesterday, marking the end of break time. In the afternoon, when I touched her again, she didn’t refuse and accepted it silently.
After work, we sat on the bench and kissed. Even after the kiss ended, Eunhye lingered, expressing reluctance to leave. I held her, sharing a silent communion before we finally parted.