Post-Nut Clarity

The library was wrapped in its usual heavy silence. From the rarely used restroom in a secluded corner came the wet, rhythmic sound of flesh slapping against flesh.

I gripped Yunsol's waist and kept thrusting my cock into her without pause. The addictive pleasure I could never get from an ordinary woman made it impossible to stop myself.

"........."

Even though thick fluids overflowed from where Yunsol and I were joined, dripping onto the floor with soft plops, she simply stared blankly ahead. Like Hye-mi noona, she made no moans, no panting, showed no change in expression. Yet her pussy never stopped moving, writhing around me like it had a mind of its own.

The sticky flesh that clung to my cock ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠like an octopus's suction cups, and the living folds inside that coiled around my glans, gave me a completely different kind of pleasure than Hye-mi noona. It was intoxicating in its own way.

"...Open your mouth."

"........."

I pressed my hips tight against Yunsol's ass, repeating short, sharp thrusts while grabbing her chin. She obeyed my command perfectly, sticking out a tongue drenched in saliva. I bit down on her lips. It felt like both my mind and body were melting.

The comforting softness of her slightly plump, warm body. I savored the feeling of being caught right in the middle between gentle and violent, filling Yunsol with thick spurts of cum that surged through my urethra.

"...Chup... Slurp..."

Even as her lower belly filled with heat and her waist trembled slightly, Yunsol never stopped kissing me. Her breath was sweet.

One minute that felt like an hour. I enjoyed the endless climax and its lingering afterglow before finally releasing the thick tongue I'd been holding in my mouth. Just as the strand of saliva connecting our lips snapped, I met her blue eyes.

"...Woo, Wooju oppa...?"

I couldn't have been happier to hear Yunsol's voice for the first time since yesterday. Her eyes had changed color, proof that ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠she was no longer who she used to be. But that voice... that was the Ko Yunsol I knew.

Still, from Yunsol's perspective, having just regained consciousness, the situation must have been utterly confusing. Her pants were stripped off, a man's cock was buried inside her, and her lower belly was so full of cum she could feel it sloshing. It was the kind of scene that would make even the famously timid and soft-spoken Yunsol scream at the top of her lungs.

Yet...

"...Ah, ha, we were doing it. Oppa, did you finish...?"

"Huh? Yeah..."

"Ah...! Then please sit on the toilet..."

Yunsol acted as if she had known about all of this and it didn't bother her at all. No matter how familiar the face, having a man who wasn't even her lover violate her unconscious body should have been mortifying. Yet here she was, stuttering awkwardly and making a shy little request. It left me feeling strangely embarrassed.

Somehow, despite the awkwardness, the situation kept rolling along. I tilted my head in confusion and pulled my spent cock out of Yunsol. While she wiped her pussy with toilet paper, I sat on the toilet as she'd asked.

After cleaning up the cum that had poured out of her, Yunsol hesitated for a moment, her face turning red. Her jade-colored eyes darted around before she seemed to make up her mind. She bit her lower lip, knelt in front of me, and opened her mouth slightly.

"If, if you're done... I'll clean it up for you...♡ Mmm..."

"Ugh, Y-Yunsol...!"

"Ah, o-oppa, did it hurt?! I'm sorry... This is my first time..."

When Yunsol looked up with a tearful face, startled by my small reaction and immediately apologizing, I shook my head.

"No... It didn't hurt. I was just surprised because you suddenly licked such a sensitive spot."

"...I-I see... Hehe...♡"

I wasn't sure which part she'd found pleasing, but Yunsol blushed and gave a small smile, seeming to regain her confidence.

"...It's my first time so I might not be very good... but I'll clean it thoroughly... Hehe...♡ Shlurp..."

Her cute, gentle face didn't match the heavy sensuality in her voice. She extended her tongue, ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠hot breath washing over me, and rubbed it against my glans.

As expected, Yunsol's tongue had turned jade-colored. It stretched to three times the length of a normal person's and coiled around my cock like a snake. The bumpy texture of her tongue, slick with mucus that smelled sweet like lotion, stimulated my hypersensitive cock right after ejaculation.

I gripped my collar tightly, swallowing down my moans. Yunsol watched my reaction carefully before gently taking my glans into her mouth.

"Slurp, suck... Haa... Cleaning complete. How was it...?"

She rolled her tongue around my glans like it was candy, then pulled away with a shy, bashful smile. Having licked up every drop of cum and her own juices, she looked up at me with an expression that seemed to ask, Did I do well?

Of course the finish had felt incredible. I never expected her mouth to feel so different from Hye-mi noona's... Still...

"What's wrong, oppa...? Did I do something wrong..."

"No, it felt too good. Because of what you just did, I'm hard again..."

"...Ah..."

Yunsol looked up at my cock, which stood proudly despite having just cum, and swallowed hard.

"...Can I ask you for something?"

I wasn't even sure what I was saying anymore.

"Yes, anything...♡ If it's a request from Wooju oppa..."

Yunsol nodded happily at my insane request and once again wrapped her long tongue around my cock. This time she immediately took the tongue-wrapped shaft into her mouth.

A shiver ran down my spine. The hair on my body stood on end. I clenched my teeth and gripped my collar again.

"Chup, slurp, gluck...♡"

The wet sounds of her lips and the air being sucked out echoed through the restroom.

Despite claiming it was her first time, Yunsol's movements were shockingly skilled. Fresh cum began to gather in my cock again. But then—

Creak—

"Ah... Why isn't that book here? I saw it here yesterday..."

"Then you should've borrowed it yesterday."

Two voices entered the restroom along with the sound of the door. I instinctively clapped a hand over my mouth to stifle any moans and held my breath.

Yunsol did the same, keeping my cock quietly in her mouth while her eyes darted around, assessing the situation.

"No, the checkout record says it's not checked out, so someone must've put it back in the wrong spot."

"Then we can just ask Ko Yunsol later. She knows where every book is. I heard from Kim Minji earlier that she's in the library right now."

...The name that came out of the two people's mouths was Yunsol's. The same woman currently kneeling in front of me, sucking my cock and slowly swirling her tongue around it.

".......Slither...♡"

"Ugh...!"

Our eyes met as we both held our breath, reading the atmosphere. The moment her snake-like tongue wriggled silently, I reflexively pressed down hard on Yunsol's head.

"....Glurk...♡"

"......!"

"Hm? Did you say something?"

"I didn't say anything, you idiot."

I could feel a faint tremor through the hand resting on Yunsol's head. Even with her airway blocked, she didn't care. She kept coiling her tongue and rubbing me. I held her head tightly, savoring the peak of climax hidden behind the tension.

"Khh..."

"Gulp...♡ Gulp...♡"

The motion sensor light had gone out after staying still for too long. In the darkness, Yunsol and I twitched faintly. We held our breath even longer, like divers holding air underwater. It was a hot, dizzying, hazy, yet eerie silence.

"Well, I guess we should go look for it now. What about you?"

"I have to go to class. By the way, did you hear the rumor about Hye-mi noona? The reason they broke up was..."

By the time their voices faded as they left the restroom, my orgasm had finally ended. When I looked down, Yunsol was trembling with ecstasy, cum overflowing from her nose.

I quickly pulled my hand away from her head, which had been gripping her too tightly.

"...Haa... Oppa, did it feel good...?♡"

"...Yeah."

She slowly pulled my cock from her mouth, swallowed the last drop of cum, and gave me a seductive smile. I nodded.

"...I'm glad. Ah, um, I need to get back to the library quickly...! I'm sorry! Let's talk during lunch later... Hehe..."

"Ah, okay..."

Before I could even ask, Do you remember what happened?, Yunsol hurriedly wiped her mouth, fixed her clothes, bowed politely, and ran out of the restroom.

Watching her hurry off to her duties as a library committee member made me think again. Just how much had the two women changed after wearing the mask? From where to where? Their bodies had become inhuman, yet their personalities and behavior seemed almost the same as before.

What did Hye-mi noona mean yesterday when she said almost complete?

I'd have to meet Hye-mi noona today, or ask Yunsol during lunch...

"...Wait a second."

While organizing the flood of questions in my head, I finally noticed something different.

My head didn't hurt.

After finishing class, I walked out and deliberately turned my head side to side. The boiling dizziness and headache that had tormented me all morning were completely gone.

It had hurt so badly I'd worried I might collapse, yet it had vanished in an instant...

"....."

Thinking about it, I'd been in that much pain and still dragged Yunsol into the bathroom to do that. I really was crazy.

I let out a small, bitter laugh and opened the notes app on my phone, adding another item.

There were still far too many things I needed to figure out. But among them, the most important was the changes happening to me, myself.

If they were small changes I wouldn't even notice, that might be fine. What worried me was the threat to my life.

The mask's influence on me might only be at the level I'd written in my notes for now, but I had to consider the possibility that it could become a much greater threat later.

I stuffed the growing pile of worries back down and put my phone away. There was a limit to what I could figure out on my own. The priority was to hear the stories of the two people who remembered what the mask had done to them.

So I tried calling Hye-mi noona, even though Yunsol was busy with club and library committee work...

"Why isn't this noona picking up..."

She wasn't ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠answering. The calls went to voicemail, and the message I'd sent earlier that morning hadn't even been read. Maybe something troublesome had happened with her boyfriend.

I recalled the rumor I'd heard that morning.

The rumor that Hye-mi noona broke up with her boyfriend.

Since Hye-mi noona was so sociable and popular, the rumor had already spread throughout the entire university. Everyone was talking about it during and after class.

I usually didn't care much about other people's gossip, but at this level, I couldn't help but pay attention.

I sent Hye-mi noona another short text and checked how much time I had until the next class. I had an hour free...

I figured I might as well kill some time in a suitable spot and work on an assignment. I stretched my stiff joints, looked around, and found a public lounge nearby.

Without thinking, I walked over and opened the door—

"Ugh, kuuuk, uup, glurk...!"

"Slurp... Haa... Oh, Wooju!"

A woman was on her knees with a pained expression, swallowing a nearly solid jade-colored translucent mucus. In front of her stood Hye-mi noona, wiping her wet mouth with her sleeve and smacking her lips. She smiled brightly at me and waved.