As I pounded her pussy relentlessly with my cock, Yeji finally couldn't hold back and opened her mouth.
“Hah, ah…! Class President, so deep…!”
Yeji's voice, soaked in pleasure, pierced my ears.
The scent of her sweat and the hot smell of her flesh kept heightening my arousal.
Yeji continued holding her pussy wide open with her own hands.
Her fully spread, pale-pink inner flesh was coated in sticky love juices, wetting both my cock and her pussy.
My thick cock plunged into and withdrew from that narrow hole.
I couldn't tear my eyes away from this vulgar, obscene sight for even a moment.
My cock forcefully pierced her hot vaginal interior like a blunt weapon. I wondered if pounding her with something this large would hurt, but Yeji only wore a lewd expression.
-Squelch, squelch, squelch.
The repeated insertion and withdrawal created wet friction sounds, and those lewd sounds formed a sensual rhythm.
Because Yeji's fingers were spreading her pussy open, her fingertips brushed against my cock shaft each time I thrust in.
“Hngh, oo, hhoo, ngh…!”
The more I pounded her, the more her lower body twitched, and I could feel the inside of her pussy responding in tiny movements.
It would be underestimating Yeji's pussy to think it was merely a one-dimensional motion that only clenched.
Depending on the angle at which Yeji spread her legs and the way she twisted her waist, the shape and pressure of her vaginal walls changed dynamically.
Yeji's body, honed through exercise, had an enormous effect even on the inside of her vagina.
Whenever the muscles in her thighs and core moved slightly, her vaginal flesh clenched of its own accord.
When I pulled my hips back once and then pushed my cock in again, a completely different pleasurable sensation welcomed my cock.
This was a pussy I could pound without ever getting tired of it.
A primal desire arose in me to explore every fold of this pussy with my cock.
“Uhn, ngh, hwaa, ahng…!”
Yeji let out sweet moans and spread her legs even wider.
Admiring how her pussy's pressure didn't weaken even with her legs spread, I moved my hips even harder.
-Whap, whap, whap!
My cock plunged deep with wet, squelching sounds.
The sensation of her vaginal walls curling around and clinging to my cock was truly a work of art.
The harder I pounded Yeji, the more she twisted her waist as though she were dying of pleasure, and the curves of her body surged and rippled violently each time.
“Do you like this spot? Or maybe this one?”
I deliberately prodded different spots inside her pussy, carefully searching for her weak point.
I prodded her cervical opening with my glans and asked if she liked it there.
Yeji shook her head and showed me a more precise spot.
“Ah, ahang! Class President, a little higher…! There, there…! Hngh!”
Yeji was a woman who didn't get much pleasure from having her cervical opening knocked.
Rather, she felt immense pleasure when I pounded her as though scraping along her vaginal wall.
So, just as Yeji wanted, I pounded upward with the tip of my glans, scraping hard against the upper vaginal wall she had indicated.
I snapped my hips while relentlessly and precisely targeting only her weak point.
“Hngh, there, hiiiik…! I'm cumming…!”
Soon afterward, a scream unlike anything before, nearly a shriek, burst from her.
Yeji raised the hands that had been spreading her pussy and reached her first climax just like that.
Her hands spread wide, and her entire body trembled.
At the same time, her pussy clenched like crazy. The strength with which her vaginal walls squeezed me became far stronger than before.
Was this the strength of a woman whose lower body had been trained through track and field? If I'd been an ordinary man, Yeji would have squeezed semen out of me again and again.
Yeji's violent reaction aroused me as well, sending my excitement soaring.
I grabbed both of Yeji's arms, which had been spreading her pussy, and thrust my hips as though pinning her down against the bed.
-Whap, whap, whap!

Each time my thighs collided with her buttocks, the juicy impacts kept time with the rhythm.
Perhaps because her body had been honed through exercise, even her bouncing breasts were incredibly elastic.
The sharp boundary between the white flesh exposed along the line of her bra and her bronze skin was lewd enough to make my nose bleed.
Yeji's brown eyes wavered, unfocused with pleasure, yet they clearly held her heated feelings for me.
Seeing that gaze made the urge to cum surge up. It felt as though semen were bubbling and boiling in my balls.
I raked my eyes over her voluptuous body as though raping it with my gaze while she was having sex.
Noticing me staring fixedly, Yeji deliberately gathered her breasts upward with her arms to show them off.
“Ah, ah, hngh, my body looks good, right? Hngh…!”
“Fucking incredible. I want to keep looking.”
"Hehe… You can look every day, heeet…!"
Yeji became aroused from nothing but my lust-filled gaze. She was truly a fucking slut.
Before long, I watched Yeji shudder and climax once more without slowing my hips.
-Pshk, pshk, pshk!
The sensation of raking through a pussy clenched tight by orgasm with my thick cock was incredible.
“I'm cumming!”
"Yeah… Fill me up… Inside me…!"
At Yeji's reckless permission to cum inside her, I gave a brief reply, then panted roughly as I poured my semen inside her.
-Gush, gush!
I didn't stop moving my hips even while ejaculating.
The pleasure of rubbing my sensitive, bare glans against her vaginal walls after cumming was addictive.
-Glrk, gush, gush!
Like stroking a faucet that had run dry to squeeze out every last drop, I poured out every bit of the semen deep inside my balls.
After finishing, I tried to catch my breath for a moment. It was less for my own sake than to give Yeji time to rest.
From experience, I knew that women usually struggled after climaxing this many times.
The hot smell of her sweat stung my nose, but it wasn't unpleasant. Instead, my cock filled with lust again.
But Yeji's condition was different from what I expected.
Other women became exhausted after climaxing only two or three times, but Yeji's eyes were still shining brightly.
She panted out sweet breaths, yet her face held only the lingering afterglow of pleasure, as though a multitude of emotions were crossing through her.
“Aren't you tired?”
When I asked, Yeji said, “This much is fine,” and stubbornly nodded.
Her healthy body, with almost no excess fat, seemed to prove it.
Then, apologetic that I, the man, had been the one moving my hips, she said she would ride me this time.
“I want to serve you properly too. It feels bad if you're the only one moving your hips, Class President.”
I gladly moved aside. When I pulled my cock out, cloudy semen mixed with a little blood from her hymen and dribbled out.
“Wait a second.”
Before Yeji mounted me, I decided to clean out what remained in her pussy.
I inserted my middle and index fingers into her pussy. At the same time, I gently rubbed her clitoris with my other hand.
-Squelch, squelch, squelch!
“Ugh, mm, ah…! Sihyeok, why all of a sudden…! Ah!”
The sudden caress of her pussy left Yeji flustered, and she gripped the bedsheet.
I swirled my fingers inside her, pulling out what remained inside.
The motion of scraping her vagina made a sound like I was scooping out her love juices.
Yeji's buttocks began bobbing on their own as she reached a powerful orgasm.
I didn't miss the instant her vaginal walls clenched around my fingers, and in less than a minute, I made her climax again.
-Pshuuush!
Her orgasmic fluids burst out and soaked my hand. A large amount of murky liquid mixed with the semen inside her pussy poured out.
“Haa, haa, hhoo…!”
Even after consecutive orgasms, Yeji stubbornly tried to continue having sex.
I lay back on the bed. Yeji climbed onto my body, aligned her pussy with my glans, and slowly lowered her hips.
“Ah, ah, Class President's cock, it's going… in….”
Watching Yeji's expression lewdly crumple as my cock sank deeper was quite an entertaining sight.
“Ugh, ohh, hngh….”
After swallowing me all the way to the base, she rested her upper body against my chest while catching her breath.
Her breathing was rough, and it seemed filled with affection for me.
“Is cowgirl too much for you? You look tired.”
I mischievously teased Yeji as she worked hard, clenching her pussy around me.
“No… I can do it.”
Yeji lifted her hips with a strained smile on her pleasure-filled face, then dropped back down onto me.
-Thump!
“Hnnngh…! Ugh, hngh…!”
Each time Yeji drove her weight downward, the pleasure shot straight upward, and her expression showed that she was feeling twice as much pleasure as I was.
‘An athletic ass really does make a difference in cowgirl.’
I reached out and kneaded her large breasts while enjoying the cowgirl position.
Yeji moved her hips with all her strength, doing her best to serve me.
Her thighs really were incredible; even though she pounded down as if doing squats, she didn't seem short of stamina.
Not long afterward, Yeji, seeming close to climaxing first, kissed me.
I accepted her lips, and she immediately intertwined her tongue with mine passionately.
Yeji climaxed soon afterward.
“Ugh, ugh, aaahng, I'm cumming…!”
Her tongue stopped moving as we kissed through her orgasm. I teased that soft tongue with mine and lightly pinched her nipple with my hand.
“Mmmph, chuup, kyaah…!”
Yeji came to her senses with a cute moan and shook her hips even more violently than before.
The force with which she slammed her pussy down onto my cock was astonishing.
“It's so lewd my head, my head is getting weird…!”
Yeji pounded away without rest while desperately intertwining her tongue with mine.
The pleasure must have been overwhelming, because she shed a single tear as she climaxed.
Made happy by her obedient yet tightly clenching pussy, I pinched her nipples even harder.
“Slurp… chu, chupa, mmph…! I'm cumming again…!”
Her stamina was good, but her sexual sensitivity wasn't low; Yeji, whose pussy was just as pathetic as an ordinary woman's, climaxed again soon afterward.
With her climax, her body fell to the side and my cock slipped out.
-Slick, slick, pshk….
At the same time, a fountain burst from her pussy and soaked the bedsheet. After it sprayed twice, I fondled her breasts while watching the juices trickle out.
“Haa, haa….”
As Yeji's eyes began to roll back, I gently scratched her areolas with my fingernail to bring her to her senses.
I wrapped my arms around Yeji's waist and brought her back onto my body, putting her into the cowgirl position again.
Then I inserted my cock and thrust upward from below.
-Thump!
At the thrust, Yeji screamed and collapsed completely on top of me.
"Ah, ah…! Class President…!"
I kept pounding my cock into Yeji while holding her close.
It wasn't easy to thrust while we were pressed tightly together, but I worked hard anyway.
Yeji had grown accustomed to it by then, and when I was about to cum, she gradually adjusted her position to make it easier for me to thrust.
Yeji's stamina really was no joke. I could change positions as many times as I wanted.
I also came once in the rear-entry position, gripping her sticky buttocks tightly and thrusting my hips upward.
That was how I had sex with Yeji throughout lunch, changing positions repeatedly.
I pounded her like a beast, driving us both as though testing our stamina. Yeji grew more exhausted as time passed, but she stayed conscious to the end and tried to match my pace.
She was the first woman who had lasted this long.
It was nearly time for lunch to end, and I had to go to the club building.
After ejaculating one last time, I pulled my cock out with a pop and said,
“I should get going now.”
“Haa, haa, haa, yeah….”
Yeji panted laboriously and wore a blissful expression.
I went into the shower room to wash, while Yeji decided to lie on the bed and rest. She said that, since she was already on the track-and-field team, she didn't need to choose a club.
It had been incredibly refreshing sex. After showering and getting dressed, I was about to leave when Yeji, sitting on the bed, called out to me with an embarrassed expression.
“Um… Class President.”
“Yeah?”
“Me… How was the sex?”
I was about to give her objective feedback as usual, but then I noticed the nervous expression on Yeji's face.
So I changed my mind and answered with a smile.
“It was great. Your pussy clenches well, and your stamina is excellent. I'm looking forward to our next time.”
At my direct praise, Yeji's face lit up, as though she had become a victor.
“Yeah! I'll give you pussy relief again next time, Class President. No, Sihyeok!”