Rule 17: A Dizzying Experience for Rio, Who Only Thinks of Senpai
After finishing sorting work with Deisy, it was already night before I knew it.
"So, like, today I went to a restaurant with senpai~."
I'd been summoned again only after dinner was over. Lying on the soft bed, I was listening to her story.
Rio had gone on nonstop for a full hour, so the content was vast, but to sum it up...
It was just your average tale of having a fun date with senpai.
The real abnormality was elsewhere...
"Hey, teacher! Are you even listening to my story properly right now?"
"O-of course! It's so exciting, I totally lost track of time..."
"Ugh... Then why does your dick keep getting harder?!"
"That's because... Rio keeps wiggling her hips..."
The carefree blonde big-titted beauty straddling my lap.
Her belly, exposed under a single unbuttoned shirt, was bulging out in the shape of my glans.
That's right.
Just like yesterday, her warm hand gripped mine tightly. And below that, her tight hole was swallowing my massive cock all the way to the root.
"Anyway, our tastes in food are so similar, right?"
Every time Rio bounced with laughter, her swollen tits—nipples tinted pink—peeked out from under the loose shirt, impossible to hide.
No matter that this was practice for her date with senpai.
Seeing her so happy with my cock buried inside stirred some inexplicable emotion, dyeing my shaft with pleasure.
The Rio who used to struggle to take me in was gone.
Her face just a little flushed now. She was so used to it that she casually rocked her hips a bit while chatting leisurely.
Then, when instinct made my hips buck sharply...
"So senpai... hng♡! Cut the steak for me... ah♡! And... mmph♡!"
Schlick! Splat! Schlick!
Mingling moans into her story, Rio squirted bit by bit. She'd climaxed so many times already, I couldn't even count.
The bed was soaked through with her juices long ago.
No matter how thirsty she got, Rio never pulled off my cock. She'd just sip water from the nightstand now and then, savoring the pleasure.
Then, exhausted from repeated orgasms, she'd collapse into my arms.
Squelch♡, squelch.
Rio guided my hand to her ass, skillfully lifting and dropping her hips.
We were definitely using a condom.
Yet I could feel her pussy walls pushing and pulling perfectly.
Especially when my cock, clinging to her tight depths, thrust in and out. Rio's hot breath washed straight over my face.
Haa...♡
Rio gazed at me with a sticky, pleasure-drunk expression. Her slim waist, swallowing my entire length, trembled fiercely.
Then, like she'd conquered me, she flashed a cheeky grin. Gently stroking my hair, she asked sweetly,
"How's it feel? You like it too... right, teacher...?"
Her arms around my neck tickled. Her stiff nipples pressed into my chest.
Staring so close at this lewd Rio, my cock answered for me.
"I'm... gonna cum any second now..."
"No... I wanna keep you inside a bit longer—. We need more practice, so hold it. Got it?"
...Did she just cut off something insane there?
Anyway, her order to stay like this was pure torture for me now.
Having to hold back in front of a once-in-a-lifetime perfect beauty.
Resentful at needing endurance in this rock-bottom situation, I grabbed her plump, overflowing ass with one hand instead of answering.
"Hng♡. Teacher, that feels so good... Keep tormenting Rio like this a little more..."
As ordered, I gripped her ass and slowly forced her hips up and down, repeating the motion.
Squelch♡, squelch♡.
Rio's eyes went wide; she clamped a hand over her mouth as she squirted uncontrollably.
Schliiick!
"Hmmph...♡!"
Her tight pussy clenched even harder around me, spasming like it wanted to crush me, squeezing with all its might.
Unable to resist the electric urge, Rio lunged for a kiss but bit my shoulder instead.
"Guh! M-miss?"
Pain like it might draw blood—I called out urgently, but she just kept biting and moaning.
"Hmmmmm...♡ Hmmph...♡"
Schliiiiick!
Even after squirting just moments ago, Rio's hot juices soaked my belly again.
After bucking her trembling hips three times, her teeth finally released weakly.
"Huu...♡ Huuung...♡" Her pupils rolled up, eyes unfocused with exhaustion. Rough pants spilled drool, chilling and sticky across her chest. I felt her belly heaving in and out against me.
"Haa...♡ Teacher... I'm so excited... Should I just confess to senpai like this?"
She'd been mumbling in pleasure for a while when...
Vrrr~ Vrrr~
The smartphone on the nightstand beside the bed buzzed violently.
Just like its owner, who'd been shaking her hips like mad moments ago.
"...Ugh, who the hell at this hour..."
The alert shattered the afterglow. Rio grumbled irritably, reaching for the nightstand—still impaled on my cock, of course.
"...Huh?"
Her annoyed fiddling with the phone suddenly froze, expression changing drastically.
What did she see?
Sitting up on the bed, still gripping her ass, I peeked at the screen.
Senpai had randomly confessed via KakaoTalk at this hour.
The timing was perfect—too dramatic. Things were progressing way too smoothly.
I eyed Rio suspiciously, half-lidded, but...
Tap tap, tap tap tap.
Without a second thought, Rio typed back.
Slam!
Unable to contain her joy, she hugged me tight.
"Eeeeek! What do I do!!! Senpai confessed to me first!!"
"M-miss? The grip... too... ngh!" Squeeze!
This was bad. The more excited Rio got, the crazier her pussy clenched around my cock.
"I'm over the moon! I'm so happy!! Eeeeek!!"
Thud! Thud!
Plus, hugging me tight while bouncing her ass. Her pussy walls wouldn't let go, grinding hot friction along my shaft.
My reason frayed at the limit; primal male instinct boiled up. My hands tightened on her ass.
I wanted to pump her full of cum right now.
Before she went to another man, flood her womb with my seed, impregnate her with my child.
Oblivious to my state, Rio focused solely on messaging senpai, phone in hand.
...I couldn't hold back anymore. The desire to claim this peerless beauty Rio for myself swelled.
Slowly thrusting my hips, I gripped her ass with both hands and stood up.
"T-teacher! Wait, I'm still messaging senpai—hngut♡! M-my feet aren't touching the ground. Your cock's too deep—hauk♡!"
Rio paused in panic. I didn't miss the chance, laying her flat on the bed.
"W-wait, teacher! Don't get so bold all of a sudden or I'll..."
She caught my instinct-driven gaze. Pinned face-down on the bed, Rio looked up at me in fear.
The reins had switched.
Now I loomed over Rio. She couldn't escape my embrace.
"Just... let me send the message..."
I didn't answer.
Instead, I started slowly moving my hips.
"Hngg...♡"
I pulled out until just the tip caught at her entrance.
Sluuurp♡.
Then slammed in hard.
Splurt♡!
Schliiiiiick!
Rio shuddered wildly, squirting again.
Tears like chicken droppings welled in her moist eyes. But even as her face twisted, her gaze stayed glued to the phone.
Jealous that she wouldn't look at me, I pistoned madly, churning her insides like dough.
Squelch♡, splat♡, squelch♡, splat♡.
Her leaking nectar slapped against my crotch, sounding like pounding rice cakes.
Smoosh♡, smoosh♡, smoosh♡, smoosh♡.
"Se-senpai... hng♡! The one who... grk♡! made me like this... hng♡! Where's se-senpai... hngk♡!"
The taboo thrill—that her heart belonged to senpai, but her body was mine—eased the ache in my hips.
I felt my cock swelling bigger. Even after wrecking her depths to pieces, it kept growing, stuffing her full endlessly.
I ramped up the speed, scraping her walls more violently.
Slap♡, slap♡, slap♡, slap♡.
The more I ravaged her tight pussy mercilessly, the more her hands shook.
"J-just... a bit more... Almost... done... N-now... hit... enter... hnnnnng♡! My head's going crazy!! It's breaking!!"
Just as Rio, eyes bloodshot from staring at the phone, hit send...
"KyaAAAAAAAHHH!!!!!"
Rio screamed loud enough to shake the room. She flung the phone to the floor and yanked my body into a fierce hug.
SchliIIIIIIICK!!!
Hotter than ever—like it was burning—Rio's squirt drenched my groin. Her pussy spasmed, biting down hard on my cock, quivering wildly.
My cum-swollen shaft erupted, blasting the load pent up in my urethra.
Blurt! Blurble! Blurt!!
My ass clenched endlessly, but the ejaculation wouldn't stop.
Blurt! Blurt!!
Like it wouldn't leave a single drop, my balls emptied every bit of thick white semen.
"Haa... Haa..."
Our breaths synced perfectly. Feeling one with her brought strange peace.
Flop.
All strength gone, my face dropped into Rio's massive cushions. Her stiff nipples poked my cheek relentlessly.
Stroke, pat pat.
After a brief rest, Rio gently patted my back.
"Teacher... I want every day to be as happy as today..."
She murmured softly amid heavy breaths.
Rubbing my cheek against her hard nipple, I glanced under the bed.
There lay senpai's message.