The Library, the Book, and the Mask
I sprinted toward where Hyemi-noona and Yunsol were, but I was already too late.
"........"
Just as Hyemi-noona had whispered into her ear, Yunsol read the characters on the back of the mask with a blank stare, then slipped it over her face. Like Hyemi-noona the day before, she froze completely in that exact position.
"Noona, why did you put that on Yunsol?!"
"Hmm...? Why? Obviously because it's for you."
My voice grew sharper with urgency at her incomprehensible behavior, but she didn't flinch at all. Hyemi-noona rose from beside the frozen Yunsol, smiling brightly as sticky drool dripped from her lips while she licked them.
She approached me, slipped my arm between her breasts, and rested her head on my shoulder.
"...Noona...?"
"I don't know why, but... ever since yesterday, I've been so obsessed with you, Wooju...♡ I want to give you everything I have—my body, my heart, my money, my friends, all of it... I've clearly been reborn. Into a body just for you...♡"
I swallowed hard as I looked down at her, her tongue now a discolored jade-green as it licked my neck.
"Noona, what about your boyfriend...?"
"Hmm? Oh... I don't care about that loser anymore. You're the only one I need..."
Her eyes narrowed with cold disgust as she glanced away for a moment, then she flashed a warm, lovestruck smile again.
"What the hell is going on..."
I muttered to myself, lost in a confusion with no light at the end. What was that mask, exactly? It hadn't just changed her body—it had rewritten her mind too. But before I could dwell on that, my thoughts snapped to Yunsol, standing there frozen with the mask on her face.
"........"
"Huh? Wooju, where are you going?"
I gently pushed Hyemi-noona away—she'd been clinging to my arm and rubbing her head against my shoulder—and approached Yunsol, who was slumped lifelessly in the chair. I placed my hand on the mask she wore and tried to slowly peel it off, but it wouldn't budge. It felt exactly like it had with noona yesterday, as if the mask had fused with her skin.
"Ah, haha... Are you worried about Yunsol? Don't be. I'm sure she'll come to love her newly born self too."
"...Noona, why did you put the mask on Yunsol?"
I asked the simple question to the woman who had quickly circled behind me and wrapped her arms tightly around my waist. I wasn't angry with her. The person standing behind me wasn't the Hyemi-noona I used to know. I was genuinely curious about her reasons, without any deeper meaning.
"...Well, I really do love you... The memories from when I was wearing that mask are hazy, but... they definitely come back to me. Your reliable voice commanding me—'Take it off,' 'Get on your knees'...♡ And the warm, thick semen filling my lower belly, my womb...♡"
Noona let out a hot breath along with her long tongue and stroked her own lower abdomen.
"Inside that mask, I realized... 'Ah, I love this man...♡' So I thought about it carefully. What would make you happy...? While I was pondering that, the 'mask' told me. It said if I turned other women into something like me and offered them to you, you'd be pleased. Oh, of course! That's when Yunsol happened to show up."
"...The m-mask told you that?"
"Yeah. I don't know how, but I just understand it."
She turned her gaze and stared intently at the mask on Yunsol's face. The mask had taught her that? I didn't fully understand what she meant, but I didn't think she was lying. After all, I'd already experienced firsthand that this mask was no ordinary object—it was something far more sinister.
Yunsol, who had put it on, was surely in the process of transforming into something not quite human, just like Hyemi-noona. Into a creature that obeyed me completely, with a lewd body designed to milk out my cum...
"...Oh, I knew you'd like it♡ Your cock has gotten so huge, Wooju."
"Ugh, this is..."
The noona who had been hugging me tightly from behind reached around and placed her hand on my painfully erect pants. Ziiiip—
"Ah, it's so wonderful...♡"
Hyemi-noona smoothly dropped to her knees in front of me and pulled down my zipper. She licked her lips at the sight of my cock springing out right before her eyes, then stroked the shaft with her elongated tongue.
"Ugh...! Noona...?"
"Slurp... Still, I should yield this to Yunsol..."
She stood up and approached Yunsol, who was slumped in the chair. Then, using the utility knife that had been on the desk, she riiiip—tore Yunsol's skirt wide open.
"Noona, what are you—"
"Wooju, have you ever heard this? Baby birds imprint on the first thing they see after hatching from their eggs and treat it as their parent. Yunsol is in that state right now. I was the same yesterday. So teach her the same way you taught me."
After cutting away even Yunsol's panties, Hyemi-noona lifted both of the girl's legs and spread them into an 'M' shape.
"Ram that magnificent cock deep inside her and give her commands. Brand yourself into her mind...♡"
Yunsol's pussy was leaking an incredible amount of lubrication, just like noona had last night. The juices had soaked the chair and were dripping onto the floor in heavy drops. But Yunsol herself...
"............."
She remained completely still, head bowed with the mask on, frozen in place. The quiet, book-loving Go Yunsol sat there with her pussy drenched, waiting. Her braided hair and the calm face hidden behind the mask made the vulgar pose look completely out of place.
.......................
My mind went black again.
I stepped toward Yunsol, lowered my hips slightly, and pressed my cock against her slick, soaking hole. Then, slowly and carefully, I pushed inside, parting the tight, fleshy entrance that offered a bit of resistance.
"...Ugh, ngh...?!"
The heat, the stickiness, and the impossibly tight squeeze. The bumps immediately began attacking my entire length right after insertion. It was a pleasure I'd experienced once before, but all I could do was grit my teeth and endure it. However—
"..............."
Spurt, spluuurt—! While her upper body stared silently straight ahead, her lower half was trembling violently and gushing like a fountain. The contrast was impossible to miss.
"Oh my, it seems like this is Yunsol's first time... but her talent is incredible...♡"
I looked down at her as she propped her chin on her hand with a seductive smile, then slowly pulled my hips back. My cock slid out with a wet sound, completely drenched in Yunsol's juices, while her inner walls clung to it as if reluctant to let go. At the same time, her ass quivered again.
"Ah, she came again. Hehe... How cute♡"
"....................."
Yunsol, who had already climaxed twice—once from insertion and once from withdrawal—simply stared quietly ahead.
"...How am I supposed to hold back..."
I muttered, shoving away what little reason remained, and thrust my hips forward again. The chair and Yunsol's body rocked violently. I gripped her trembling lower half—which was still squirting—and pounded into her like a madman. I drove my cock in with enough force to crush her womb against the tip of my glans.
"................."
She was squirting enough fluid to pass out from dehydration, yet not a single moan escaped her. I lifted her top. Sure enough, modest white underwear greeted me. I didn't even need to remove it—her breasts bounced freely with every shake of her body. They looked slightly larger than Hyemi-noona's. Who would've thought she was hiding something like this under those thick, baggy clothes?
I took one of her stiff nipples into my mouth, rolling it with my tongue while continuing to thrust. I felt like I could cum at any second, but a greedy desire to savor this pleasure just a little longer filled my head. Yet I couldn't reach that desire.
A sensation similar to when I was with Hyemi-noona, yet somehow different, surged from inside her pussy. It felt like something was sucking hard on my glans, and I came right then and there.
"Ugh, kuhuuuk...!!"
It was an unbelievably long ejaculation, even though I'd cum so much yesterday and already once today. I filled Yunsol's womb with my semen in heavy, spurting bursts, like I was pissing it out. By the time I couldn't tell if I was finished or still cumming, something bumped against my head with a soft thud.
"Haa, haa...?"
What fell to the floor after hitting my head was none other than the mask—Yunsol's mask.
"Hehehe, all done. Good work, Wooju..."
"...Noona..."
I met eyes for a moment with noona as she approached again and gave me a quick kiss on the cheek, then looked up at Yunsol.
"...................."
The mask that had seemed permanently fused to Yunsol's face had come off. Her eyes, once hidden behind it, had lost their vitality and were now stained with a strange jade-green hue. She stared with wide, emotionless eyes and wore a faint, hollow smile.
It was the exact same expression Hyemi-noona had worn earlier that day.
"This is..."
"Yunsol is almost 'complete' now. She's currently rewriting her mind to match her newly born body."
"...How do you know all this so well?"
"Because I went through the same thing today♡"
Hyemi-noona gave a small smile toward me as I collapsed onto the floor, completely spent, then licked Yunsol's cheek with her long tongue.
"Congratulations. In about a day, Yunsol will be yours too, Wooju."
I stared at the hollow-eyed Yunsol and at Hyemi-noona as she picked up the mask from the floor and handed it to me. I had no idea what this mask truly was, or what it wanted from me... but I reached out and took it from her.
Maybe I had already been changed by wearing it too. I simply couldn't escape from that dark desire, from that overwhelming pleasure.