Touching Chaerin's Breasts
The bathroom door opened carefully, and Chaerin emerged through a veil of pale steam.
Her freshly showered body carried the clean, youthful scent of body wash.
Even though she had dried her hair, a faint dampness still clung to the strands, leaving them slightly wet, while the hot vapor had left her fair cheeks flushed and glowing.
The moment her breasts were about to be touched, every trace of her usual grumbling vanished; only the face of a shy young girl remained.
Chaerin wore a loose short-sleeved pajama top. Through that thin fabric the rounded contours of her full, rising breasts stood out in clear relief.
"…Were you still looking?"
Spotting me with the textbook still in my hands, she quickly averted her eyes. I gave a quiet laugh, set the book aside, and beckoned her over.
"Come here."
Chaerin hesitated, lips working as if she might protest. Then, resigning herself, she trudged forward and carefully settled into the chair in front of me.
Even after a long shift and cooking dinner she should have been exhausted, yet her eyes trembled with the faintest spark of anticipation.
"Can I touch your breasts?"
Her shoulders gave a little shiver. Head bowed low, she murmured in a tiny voice,
"…D-Do whatever you want."
"I'll follow the textbook exactly. Think of it as preparation."
I spoke lightly as my fingers found the hem of her pajama top.
Thin, soft cloth under my touch. When I slowly lifted the fabric, her pale, slender waist and flat belly came into view.
Chaerin sucked in a sharp breath and tensed her stomach; her whole body had gone rigid with tension.
Once the top was completely removed, a pale-pink bra appeared.
It was the first time I had ever looked at my twin sister's undergarment like this.
The unfamiliar sight made my cock grow thick and heavy in an instant.
The bra could not fully contain her generous breasts; the soft upper swell spilled over the cups just a little.
"Take this off too."
"……."
Instead of answering she kept her head down and, with trembling fingers, reached behind her back for the clasp.
Whether from anticipation or nerves, her fingers fumbled several times before a soft click sounded and the bra came free.
At last the two ripe breasts hung fully exposed before my eyes, nothing left to hide them.
"Whoa…"
An involuntary gasp of admiration left my lips. Two full breasts sat beautifully against her fair skin.
At their tips rested shy, light-pink areolas and small nipples that still slept, soft and dormant.
I recalled the textbook passage.
"Get ready."
"…What?"
"The book said so, didn't it? Make your nipples stand up before you welcome your master."
Her face flared scarlet.
"A-Are you insane? H-How am I supposed to do that…!"
"You have to do it yourself. Hurry."
I folded my arms and urged her on like a strict instructor.
Ordinarily I could never be this firm with Chaerin, yet somehow tonight was different.
Perhaps I possessed a natural talent for handling women.
In my previous life I had never even properly held a girl's hand, so I had never known such a gift existed inside me.
After a brief hesitation Chaerin brought her trembling hands to her own chest.
Her small fingers lightly gathered the fabric of her pajama top and began to rub her nipples gently through the cloth.
Watching her caress her own breasts, eyes squeezed shut in embarrassment, made me clench my fists with pure excitement.
Before long a thin moan slipped from her lips.
"Hnn…"
A moment later she carefully withdrew her hands. I held my breath and watched the change.
Nipples that had been nearly flat only moments ago now stood stiff and proud.
Those tiny hard peaks, fully erect and demanding attention, were the perfect signal that she was ready.
"Good girl."
With a satisfied smile I finished stripping away her pajamas and finally stretched my hands toward her breasts.
The instant my fingertips met her warm, soft flesh, her whole body jerked hard.
"Hyaah!"
A violent, electric reaction ran through her. For a second I wondered if I had done something wrong, but the expectant light in her eyes told me to continue.
I cupped her right breast completely with my palm.
Soft, overflowing flesh filled my hand, pliant and full beyond what one palm could hold.
I applied slow pressure, rolling my hand in gentle circles.
Under my palm I felt the hard little nipple, and every time I pressed it Chaerin's body twitched.
"Haah… nnngh…!"
She twisted her hips and bit her lip, fighting the pleasure.
By every standard I had known, a woman should not collapse so easily from mere breast play.
Perhaps the women of this world were not only more lustful—their bodies were simply more sensitive.
Aroused even further, I gave her left breast the same attention.
Both hands cradled her twin mounds, kneading them slowly in opposite directions.
The thought that I had lived an entire life without ever touching a woman's breasts suddenly felt almost tragic.
With the tip of my index finger I flicked one of her erect nipples—just the lightest tap. The little peak quivered.
"Hyaak!"
A near-scream tore from her throat and her hips jerked. Far more sensitive than I had expected.
Amused, I began to toy with both nipples in turn, flicking them playfully with my fingertips.
Each time Chaerin clung to my shoulders, trembling all over, at a complete loss for what to do.
I recalled the textbook again, then carefully pinched her right nipple between thumb and forefinger.
"Wait, Sihyuk… haah… stop…"
Her sweet, pleading voice begged me to quit.
I ignored her. I tightened my fingers, gave the nipple a light pinch, and tugged it upward.
"Hyaaaah…!"
A cry of a completely different order—nearly an orgasmic scream—burst from her lips.
Her eyes lost focus and grew wet; between her legs sticky love juices already soaked through the crotch of her pajama bottoms.
"We're not finished yet."
I whispered mischievously and took the still-pinched nipple into my mouth.
"Kyaah…!"
She could not even scream properly.
Shock that a man had taken her nipple into his mouth, combined with the overwhelming rush of pleasure, left her entire body shuddering.
I wrapped my tongue around the little peak and rolled it slowly.
Every time the flat of my tongue or its tip tapped the nipple, her lower half convulsed as if electrified.
My mouth gently suckled the right nipple with steady pressure.
When I stiffened my tongue and pressed hard against the most sensitive tip, Chaerin's body sprang upward like a coiled spring.
"H-Hey! You're only supposed to touch…!"
Everything leaving her mouth had already melted into pure moans of pleasure.
It was the first time I had ever made a woman climax.
Watching Chaerin tremble and come apart filled me with a conquering satisfaction so vast I felt I owned the whole world.
The emotion was so new and so fierce that I no longer knew how to stop—nor did the thought of stopping even occur to me.
Still savoring her reactions, I tightened the hand that gripped her left breast.
Between thumb and forefinger I took the stiffened nipple and twisted it slowly, relentlessly, clockwise.
"Nn… nngh…! It's weird… it's weird… my head… spinning…!"
Soft, wet pleasure flooded her from the right while sharp, electric sparks attacked from the left.
The two opposing sensations seemed to short-circuit her brain completely.
In the end she could no longer endure it; her thighs twisted tightly together.
Still I did not stop.
"Sihyuk… my… my breasts feel so strange… please… hnnngh!"
Her desperate pleas were the highest praise I could receive.
Just like before, her hips began to lift off the chair. Another climax was building.
The hands gripping my shoulders squeezed harder and harder.
Using both mouth and fingers I stimulated both nipples at once.
"No, no, no…! I can't… any more…! I'm—I'm coming…!"
Finally, with the right nipple thoroughly wet, I gave its very tip the lightest, most delicate bite with my front teeth.
Not enough to hurt, yet sharp enough to be unmistakably felt.
In that instant—
"Hiiiiiiit!"
A long, tearing scream ripped from Chaerin's throat.
Her white body went rigid on the chair, convulsing as though seized by a fit.
Her eyes rolled back; saliva trickled from the corner of her mouth.
Both hands lost their grip on my shoulders and flailed desperately in empty air, as if searching for something to hold onto.
Between her legs love juices gushed out, completely soaking the crotch of her pajama bottoms.
How long the storm lasted I could not say.
When the violent waves of pleasure finally receded, Chaerin collapsed against me, utterly spent.
Exhaustion from work and cooking, plus the first truly intense nipple orgasm of her life, had drained every last drop of strength from her body.
She gasped for breath, sweat-damp hair stuck to her cheeks, and rested her head on my shoulder.
"…I'm so tired."
The voice she managed to squeeze out was soft and dazed, half-asleep already.
I simply held her close. Her soft, warm breasts pressed fully against my chest.
A satisfied smile rose unbidden to my lips. Completely limp, Chaerin nestled in my arms and drifted into quiet, even sleep.
I brushed a light kiss across her damp forehead. Tonight would end here.