Common Sense Alteration: The Canned Coffee's Reward

"Hah. Hah. Hah."

"Did you run all the way here?"

I had sprinted quite a distance and needed a moment to catch my breath. Ayoung tilted her head, her expression puzzled as she watched me.

Her sparkling, clear eyes, the way her short hair tilted with her head, her flawless skin—even her curious look was breathtakingly beautiful.

"Hah... It's nothing. Whew... I just thought one wasn't enough, so I brought another."

I kept my expression neutral, pretending I knew nothing, and handed Lee Ayoung another canned coffee.

"Oh. One was plenty, but thank you. I'll enjoy it."

Whether she simply never refused gifts or the quest's influence was at work, Ayoung accepted without protest. She set the can beside her monitor and stood up again.

Just like before, she walked over, knelt between my legs, and unzipped my pants. Her tongue slipped out once more.

—Zzzip.

—Lick.

The familiar sensation returned, climbing along my shaft. She began sucking in earnest, her face nestled between my thighs.

"Slurp... Suck..."

—Creak... creak... creak...

The old chair groaned beneath us. I leaned back, watching her work. The same mouth that usually greeted me with a bright smile was now wrapped around my cock. Her clear, sparkling eyes were shut tight, focused entirely on the task.

"Could you open your ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠eyes for me?"

"Mmm..."

After cumming in her mouth once, I felt strangely confident, as if I had already claimed her. She obeyed, opening those clear eyes and looking up at me. With my dick between her lips, her gaze carried a distinctly lewd edge.

"Suck... Slurp... Lick."

I placed ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠my hand on her head again and pressed down firmly.

"Mmph! Mmmph!"

—Creak... thud! creak! creak!

Her body jerked. I had pressed too hard; she waved her hands in protest. I eased up.

"Hah! Cough!"

She pulled back, gasping, tears glistening at the corners of her eyes.

"Hah... Please... don't press so hard..."

Then she leaned in and resumed.

She keeps going until I finish, huh?

I wanted to savor every second. Since she had followed my request to open her eyes, it seemed she would allow me a fair amount of control during oral. This time I stroked her hair gently, tracing the curve where her slender neck met her head. It felt delicate, almost fragile.

While I enjoyed the feel of her neck, her tongue suddenly grew bolder, swirling and lapping at my glans with renewed intensity.

"Hah!"

A moan escaped me. The stimulation built rapidly. Even after one orgasm, the sight of innocent Ayoung earnestly sucking me off was far more pleasurable than I had imagined.

Before long I came again.

—Spurt.

"Hah... hah... hah..."

I slumped in the chair, mind hazy. My pants were half off, cock exposed, yet no one in the office found anything strange about it.

Ayoung spoke with my cum still in her mouth.

"Shwallow?"

Instead of answering, I pulled out my phone.

"Stay like that for a second."

—Click. Click.

I took a few photos of her—mouth open, waiting obediently, lips glistening.

"You can swallow now."

—Gulp.

She swallowed, stood, and brushed the dust from her knees. I immediately grabbed another canned coffee and offered it.

"Here. One more."

"Another? I really don't need this many... but thank you. I'll drink it well."

She accepted it, returned to her desk, and lined the new can up beside the previous two. Three cans now stood neatly by her monitor.

When she came back, she looked thoroughly disheveled. Her hair was messy, knees lightly dusted, and her face was flushed—semen still clinging to her lips, faint tear tracks at the corners of her eyes. Anyone glancing at her might have thought she had a cold.

"Are you ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠all right? Was it too much?"

She brushed her hair behind one ear and smiled lightly.

"I'm fine. You gave me coffee, so of course I have to say thank you properly. Right?"

"Yeah... Common sense and all."

The altered common sense that receiving canned coffee means giving oral in return really is perfect.

She bowed her head once more and began her third "thank you" of the night.

"Slurp... Suck..."

My gaze drifted lower, to the gentle swell of her breasts visible beneath her open shirt.

"Unbutton your top a little."

Without resistance, she undid the buttons of her shirt and cardigan while still sucking me. Her slender figure came into view. I leaned forward and reached out, cupping the soft warmth of her breasts. The sensation was addictive. I kneaded them thoroughly, then squeezed harder.

"Mmph!"

She whimpered around my cock. Every little sound she made only aroused me further.

While I was lost in the feel of her chest, another powerful climax hit me.

—Squirt.

Three consecutive orgasms. My body felt completely drained, yet I still craved more. The time limit window appeared in my vision.

I'm running out of time...

Even in my exhausted haze, urgency clawed at me. I grabbed another can from the remaining four on my desk.

"Swallow quickly. I'm in a hurry."

—Gulp.

"And take this too."

"Hah... hah... You bought... so many coffees?"

Ayoung looked at me with teary eyes, her shirt still open, hair tousled, semen on her lips. She returned to her desk and placed the new can beside the others. Three cans now stood in a neat row.

She came straight back and resumed sucking.

"Slurp... Lick... Suck..."

—Creak... creak... creak...

What happens when the time runs out?

A sudden, uneasy thought struck ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠me. If I keep this up, could I get caught?

I had been too hasty. The time between each climax was getting longer, and I only had five minutes left.

I need to finish within five minutes somehow...

An idea came to me. I pinched her nose shut with one hand and gripped the back of her head with the other.

"Mmph?"

Her eyes widened in surprise. I stood up, still holding her, and began thrusting into her mouth.

—Thrust. Thrust. Thrust.

"Mmph! Mmm! Mmph!"

She made panicked sounds as I fucked her throat, but I didn't stop. Each deep thrust made her body jolt. The head of my cock slammed against the back of her throat again and again.

Within moments I came—far less than before, just a weak spurt.

"Hah! Cough! Gack!"

Ayoung choked, cum spilling from her lips as she gasped for air. I stumbled backward and collapsed into the chair, panting heavily.

"Hah... hah... hah..."

Honestly, I felt like I might die. I had pushed myself too far, blinded by the sudden opportunity.

With my pants still around my knees and cock exposed, Ayoung spoke to me.

"Juwan, I'll enjoy the coffee."

"Yeah..."

My eyes were half-glazed. She stood there with her shirt open, semen on her lips, tear streaks on her face, hair disheveled—yet somehow the sight was strangely erotic.

"Hah... hah... hah..."

While I caught my breath, she buttoned up, dusted herself off, and returned to her seat. Three canned coffees stood neatly beside her monitor.

Because I had no idea what would happen once the alteration ended, I hurriedly pulled up my pants and sat back at my computer.

"Hah... hah..."

I'm... exhausted...

Ayoung spoke up.

"I think I should head out now. Are you finished, Juwan?"

"I... still have a bit left. You go ahead."

"All right. I can't be too late getting back to the dorm, so I'll go first."

She gathered her things and prepared to leave. I watched her, dazed.

She's so pretty...

It still felt like a dream. That girl had just given me oral four times tonight. Unbelievable.

While packing the three cans into her bag, she smiled.

"I'll enjoy the coffee. Thank you. There are so many—I think I'll share some with my boyfriend tomorrow~."

She looked slightly apologetic about not drinking them all herself.

"That's fine. Share them. You worked hard today, so I hope your boyfriend enjoys them."

I gave her a meaningful smile.

"He drinks coffee all the time, so he'll love it. And helping out when there's a lot of work is only natural, right?"

She misunderstood my words as referring to the student support center tasks, completely unaware of what she had actually done tonight in exchange for the coffee.

The thought sent another thrill through me.

"Well then, I'll be going."

She was about to leave when I called out.

"Wipe your mouth with a wet tissue before you go. You spilled a little coffee earlier."

I handed her a tissue. She cleaned the remaining traces from her lips and headed for the women's dormitory.

Once she was gone, I sank into my chair, replaying everything that had just happened. After finishing my work and tidying up, I dragged my exhausted body back to the men's dormitory.

When I opened the door to my room, my roommate and junior from the business department, Taeyoung, greeted me.

"Hyung! You're back. You're a little late tonight."

"Yeah."

"Wanna play some games together?"

"Nah, I'm good."

"Hyung, did something happen? You look completely wiped out."

"I'm exhausted... Anyway, I'm just gonna shower and sleep."

Taeyoung loved games. He was a bit chubby and shy around strangers, but once you got to know him he was genuinely fun. We often played together, but tonight I had no energy left.

The dorm was usually four-person rooms, but paying a bit extra allowed for a two-person room. I had chosen that option to avoid the noise, so Taeyoung and I shared the space.

After a quick shower I collapsed into bed. My heart was still racing. I closed my eyes and replayed the memory of Ayoung on her knees in the empty office. Her innocent face, flawless skin, clear eyes, glossy short hair...

In my mind she began to break. The girl who always smiled brightly at me now choking, tears streaming, mouth full of cum, unable to resist as I thrust deep into her throat.

I didn't want to forget a single moment.

But my body had been pushed far beyond its limit. Sleep claimed me almost instantly.