Semen Thief Kang Iseor

The sound of rushing water filled the bathroom as droplets from the showerhead danced across Kang Iseor's pale skin. It was already noon by the time she woke up in Han Jihoon's bed, and now she was washing her body in the bathroom of his studio apartment.

Ha, you crazy bitch. What a fucking crazy bitch!

She glared at her reflection in the mirror, cursing herself in her mind. Just drinking his semen was insane enough, but she'd ended up letting their bodies intertwine too. The excuse that his scent made her lose her mind couldn't stop the wave of self-loathing crashing over her.

Get a grip already. Why the hell am I like this!

She slowly replayed the events of the previous night. Unable to soothe the aching frustration inside her, she'd gone looking for Jihoon. He'd offered to let her smell him on the condition that she let him touch her body. That suggestion had escalated into full-blown sex, and because his scent had clouded her reason, she hadn't been able to refuse.

Han Jihoon, you despicable bastard.

The moment he realized she was helpless against his scent, he'd dropped the act. Just as expected from the beast who pretended to be kind and gentle while secretly jerking off to the smell of his close noona's underwear.

This is the last time I ever get involved with that guy.

She had no intention of reporting him to the police. Her own inability to control herself had contributed heavily to how far things had gone. She simply never wanted to associate with someone whose inside didn't match their outside, so she planned to sever all ties with him after today.

"Ah!"

Kang Iseor flinched as she stepped out of the bathroom after her shower. She'd forgotten it wasn't her house and had walked out completely naked, but to her relief, the living room was silent and empty.

"Ow… ugh."

The moment she relaxed, a groan escaped her as she clutched her pelvis. The aftermath of her first time, perhaps—her lower body throbbed with muscle pain. Still, it was a relief that her overall condition was better than yesterday. Back then she'd passed out just from smelling him or orgasmed from swallowing his load, but those symptoms were absent now. Whether she'd simply grown used to it or had released all her pent-up desires last night, she couldn't say.

I should get dressed and leave before that bastard wakes up.

Kang Iseor paused while reaching for her underwear.

Wait. What if I go home ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠and my body starts acting up again like yesterday?

The horrifying memory of being unable to stop masturbating because she craved his scent flashed through her mind. It was an experience she never wanted to repeat, so she fell into serious thought.

Nothing I do alone seems to work.

To calm her burning body, she needed Jihoon's touch—or at the very least, his semen.

If I need his semen…

Her eyes turned toward the room where Han Jihoon was sleeping.

A short while later, still naked, Kang Iseor quietly slipped into his room. The man who'd done all those things to her last night was now sleeping peacefully without a stitch of clothing. She shot him a silent curse before carefully climbing onto the bed.

I have no choice. I need to take his semen with me.

If she went home and masturbated until she was sick of it while using his semen, the fire inside her should finally go out. That was the conclusion she'd reached after much agonizing.

"Hup!"

Kang Iseor's eyes widened as she cautiously pulled back the blanket covering Han Jihoon. Even after stirring her insides so thoroughly last night, he still wasn't satisfied—his cock stood rigidly upright. It looked almost like it was standing guard in place of its sleeping owner, throbbing with anger.

Ah! I can't smell it!

She took a deep breath, pinched her nose with her left hand, and grabbed his shaft with her right. The thick rod that wouldn't even fit in one hand—she began stroking it with single-minded determination to extract his semen.

Squish… squish…

…

The sight of him sleeping soundly while his cock was being fondled was utterly pathetic. A few seconds later, her gaze shifted from his sleeping face to his crotch.

Wow, it's definitely not a normal size.

She'd never seen another man's penis in person, but even she could tell this one was abnormal. The pleasure she'd felt during sex with him yesterday had been far from ordinary too. Still, no matter how good the sex had been, she didn't want to repeat her mistake.

I need to make him cum quickly before I run out of breath…!

Slap, slap, slap, slap!

Her hand moved faster as her chest grew tighter. She'd forgotten to check if he was waking up and was completely focused on stroking him when the rod in her hand suddenly swelled even larger.

Now!

Her other hand grabbed the item she'd prepared. It was none other than the bra she'd worn here. Unable to find a more suitable container for his semen, she'd had no choice.

I can't use my panties. What if some gets inside and I get pregnant?

Anticipating the trajectory, she positioned the bra and pumped her hand vigorously. In response to her desperate effort, thick white fluid began spurting from the tip of his glans.

Got it!

The inside of her bra was now a complete mess of a man's semen. She should have felt disgusted, yet her heart was pounding just from looking at it.

This isn't the time. I just need to get dressed and sneak out…

Kang Iseor froze as she was about to leave.

Wouldn't more semen be better?

In the end, she picked up her panties too. Completely forgetting her earlier thought that she couldn't use them, she began stroking him again like a goldfish with no memory. The moment she caught the second load in her panties—

"…Iseor noona?"

"E-eh?"

At the worst possible timing, Han Jihoon woke up. Fortunately his eyes were still closed. Kang Iseor hurriedly climbed off the bed and started throwing on her clothes.

"Mmm… what were you doing?"

"I'm getting dressed right now, so don't open your eyes!"

"Don't open my eyes?"

"Yeah! If you do, I'll kill you. For real!"

"Okay."

After finally putting on all the clothes she'd left by the bed, she spoke as casually as she could manage.

"I-it's fine now."

"What were you doing, noona?"

"I told you I was getting dressed."

Han Jihoon had woken up before she could sneak out of his studio apartment. She couldn't just run away now—if she did, she was terrified he'd find out what she'd done.

"Are you going home? You can stay longer if you want."

"W-why would I stay here any longer…"

"Are you okay? Your face is bright red. Do you have a fever?"

"I'm perfectly fine, so stop worrying about me."

In truth, there was another reason Kang Iseor's face was flushed.

Oh shit. I'm going to lose my mind.

She'd originally planned to put the semen-stained underwear in a black plastic bag, but because he'd woken up, she'd hurriedly put it on to hide the evidence. In other words, she was currently wearing a bra and panties soaked in Han Jihoon's semen.

It was a critical situation where she might be seen as even more perverted than someone who enjoyed drinking cum.

My body's so hot I feel like I'm going crazy…

Every time she felt the heat and stickiness of his semen against her breasts and pussy, an electric current seemed to shoot through her entire body. The fact that his scent was soaking into her most intimate places kept shaking her reason.

"You're trembling all over and you expect me to believe you're fine? You probably caught a cold from sleeping naked. Stay here and rest. I'll go buy some medicine."

"I said I'm fine! I'm really okay."

She somehow managed to cling to her sanity. If he found out she was wearing underwear covered in his semen, it wouldn't just be a matter of reason—her human dignity would completely collapse.

"And I find it really unpleasant when you pretend to care, you know?"

Because she had something to hide, unnecessary aggression seeped into her words. Afraid he'd notice something strange, she quickly turned away.

"I'm leaving now."

"Wait, noona. About last night—"

"Let's not talk about it. It's not normal for people who don't even like each other to do something like that. We were both just out of our minds yesterday, so let's pretend it never happened."

Han Jihoon grabbed Kang Iseor's shoulder as she tried to leave.

"Just a second, noona."

"Hik! W-what? Don't touch me while talking."

The moment his hand touched her hypersensitive body, she barely endured the way her legs nearly gave out.

"If you ever want to do it again, just come anytime."

"…Did you not hear what I just said? I'm never coming back. And stop acting like you ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠know me from now on. If it weren't for my mom, I wouldn't even have to look at your face."

Her voice was firmer than ever, filled with genuine sincerity. Yet inside her head, reason and instinct were engaged in a fierce tug-of-war, leaving her mind in chaos.

I want to go home and masturbate so badly I'm losing my mind…

"S-so, I'm going."

If she dragged this out any longer, she didn't know what she might do. Leaving Han Jihoon—who no longer tried to stop her—behind, Kang Iseor hurriedly fled the apartment.

Bang!

Click.

After Iseor noona left, I was alone in the studio apartment again.

"Whew."

I'd really been scared shitless earlier. I'd opened my eyes while half-asleep only to find noona with a serious expression, reaching for my cock. For a second I thought she was trying to destroy my treasure as revenge for taking her virginity, but it seemed she just wanted my semen, so I closed my eyes and pretended to keep sleeping.

But her hostile attitude was still there.

No, it might have actually gotten worse.

With all sorts of thoughts running through my head, I picked up my phone. Right on cue, a notification arrived saying Iseor noona's document had been updated.

She gave me a handjob while I was sleeping just to steal my cum?

I couldn't hide my surprise when my phone vibrated again.

So now I can write about things besides her sexual kinks. Still, it only removed an existing restriction, so the level-up reward feels a bit underwhelming.

Right then—

My authority level had gone up at the same time. The user document probably referred to my own profile. I wondered what hidden information it contained. Since I had points to spare, I spent them right away.

Quite a lot of information had been revealed. First, the explanation of my authority. I'd thought Sexmuwiki was some kind of hypnosis app, but unfortunately it said modifying past memories was impossible. The note about insufficient authority LV suggested it might become possible if I raised my level. It really felt like a game—grinding to level up had its own appeal.

Anyway, erasing the middle school incident from noona's mind seemed impossible for now. Next, the "Physical" section caught my eye. It said my body had changed because of Sexmuwiki. Yeah, there was no way a normal human body could produce that much semen. The fact that physical enhancement was possible meant this was clearly something beyond a simple hypnosis app.

Does that mean I could spend points on my own document to strengthen myself further?

It was interesting, but I didn't have any particular complaints about my current state. I'd look into it later and turned my thoughts back to Iseor noona.

According to the wiki, even while talking to me earlier, she'd been wearing underwear stained with my semen.

This is seriously ridiculous.

Her intention was even more absurd. She thought she could eliminate her scent fetish through enough masturbation. It seemed noona believed her sexual tendency was only a temporary issue.

So that's why she declared so confidently that she'd never come back, trusting in my semen-stained underwear?

Without me having to do anything, noona would eventually come looking for me again. The semen would dry up, and her kink wasn't going anywhere.

Still, just waiting quietly wouldn't be any fun.

I'd also been curious ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠about something else regarding Sexmuwiki. To test it out, I used my last point to add new information to the "Events and Incidents" section. All that remained was pressing the save button.

Should I leave her alone for a day or so?

She'd gone through the trouble of stealing my semen by smearing it on her underwear. It was impressive, so I figured I could let her enjoy it today. I'd add the information tomorrow. I closed the app.

What time is it? I need to clean the room, eat, and go to the gym…

I also had video editing to do, so I'd better get moving. Humming a tune, I headed to the bathroom to start my day.