First Sex
“Do you need your photo taken too, Teacher?”
“Yes. Even the staff have to take a new faculty ID photo once a year.”
Teacher Seol smiled her usual gentle smile as she prepared to step in front of the camera.
“Sihyuk, you don’t have to help me.”
A faint resignation colored her voice.
“I’m the kind of age university students don’t like. There’s no need for you to help an ajumma teacher like me.”
Ajumma?
The word did not belong in the mouth of a woman only five or six years older than us—a woman who was still dazzlingly beautiful even in this very moment. That humility of hers only made her shine brighter.
Apparently, once a woman passed her early twenties in this world, her value dropped sharply.
I took a step closer and looked straight into Teacher Seol’s eyes. Up close, her lightly made-up face looked even purer and more beautiful. Looking down at her from this distance, I saw her startled pupils tremble like those of a frightened deer.
“Being able to help someone as pretty as you would be an honor.”
At my frank praise, Seol’s pale cheeks flushed peach-pink in an instant. She seemed unused to receiving direct compliments from a man; she blinked a few times, at a complete loss.
“You’re my first homeroom teacher at the academy. I really want to help.”
I grinned playfully and lightly took hold of her arm. Soft, warm skin met my fingertips.
“…Thank you, Sihyuk. Then… if it’s not too much trouble, would you help me with the photo?”
Persuaded, Teacher Seol gave a shy little nod.

From what I was told, you could wear clothes for the faculty ID photo—or not. Most women, no matter how good their figures, still chose to dress neatly. Apparently some man in the past had complained after seeing a less-than-fresh female teacher’s nude shot and found it disappointing.
I set about persuading Teacher Seol right away: we should take the nude version, just like the rest of us. She hesitated, but when I insisted stubbornly that a nude photo was the only proper way, she eventually accepted my proposal.
The body she had been hiding under that suit was so perfect it was hard to believe. She clearly worked out regularly; her smooth abdomen and healthy curves spoke for themselves. Even plain underwear could not hide the sensuality her figure radiated.
“Teacher, your front is great, but your back is pure art. How about a full-body front shot for the front of the ID and the back view for the reverse?”
Her rear was every bit as firm and alluring as Seo Yeji’s track-team thighs. If Yeji’s thighs scored a hundred and everything else a ninety, Teacher Seol was a solid ninety-five across her entire body.
Under my continuous praise of her figure, she confessed with a shy smile that she did yoga and exercised regularly. Once again she let herself be talked into following my suggestion for the photos.
When she swept her waist-length hair back, the first things that appeared were her large breasts and nipples that had not yet stiffened with excitement. A little lower, her pubic hair was neatly trimmed into a clean inverted triangle.
“Just a second—let me help get you excited.”
I had been waiting for this moment; I closed the distance in a flash. The moment I took her breasts in my hands to stiffen the nipples, a sweet body scent rose from her. The soft flesh was too large for one hand; I cupped both breasts and slowly savored the feeling.
So this is what an older woman’s chest feels like.
A strangely cozy, warm sensation spread through me. I deliberately met Teacher Seol’s eyes while I spoke, building goodwill.
“Are you married, Teacher? Boyfriend?”
“Ah, n-no… neither.”
“When you’re this pretty? How old are you?”
“Twenty-five. I graduated from the academy last year; this is my first posting.”
She answered shyly at first, but when my fingers gave one nipple a light pinch she squeezed her thighs together. The way she tried to endure the shame of going soft under my touch only made her hotter.
Then a sudden, fierce urge hit me—I wanted to suck on Teacher Seol’s… no, Seol-noona’s breasts.
Maybe the thought showed on my face. Seol-noona gazed at me with languid eyes and whispered right against my ear.
“Want to suck them?”
A sultry, sexy atmosphere poured off her that I could hardly believe belonged to the usually gentle Teacher Seol. Before I knew it her hand was sliding up my back. Those slender fingers tapped, tapped against my spine as she pressed her body lightly closer. Her breasts squashed against my shirt for a moment.
“Nobody’s ever sucked my nipples before. Will you be the first?”
I didn’t even notice she had switched to casual speech; I just nodded as if entranced. She smiled softly and pulled my head forward. Her hard, erect nipple slipped into my mouth as naturally as breathing. Instinctively I sealed my lips around it and began to suck like a baby.
“That’s it, good boy. Roll your tongue around the nipple… mm, you’re doing so well. Ah… right there, hah…”
She hugged me as if I were an oversized infant, treating me like something adorable. Her trembling breath brushed the crown of my head. Only then did I realize her whole atmosphere had changed, but with her nipple in my mouth I simply surrendered to lust. No milk came out, of course, but the sheer act of sucking an adult woman’s nipple was thrilling enough.
Right then the photographer stepped out to take a phone call.
“Ah, I’m working right now… just a moment, sorry—I need to take this.”
He gave us an apologetic wave and hurried past the curtain. This was my chance.
Still nursing at her nipple, I slid my free hand down and gently stroked her pussy.
“Hnn…!”
The pleasure must have been intense; her hips jerked. Undeterred, I leisurely rubbed the soft entrance with my fingers, then pressed firmly on her clit with my index finger. She sucked in a sharp breath. When I sucked hard on her nipple with a wet ssuuck, Seol-noona’s breathing turned ragged and she collapsed against me. Moments later her whole body shuddered and a lewd moan spilled from her lips. She hugged me even tighter, as if begging me to suck harder. I felt the lewd juices that had just spilled from her pussy soak into my shoe.
“How does it feel to come on my hand? Pretty dirty, isn’t it, Teacher?”
When I finally released her, Seol-noona’s breasts were glossy with my saliva. The lighting made the spit-coated mounds look even more obscene.
“Yeah… it’s dirty. Heh.”
Once the shoot was finished and she was getting dressed again, Seol-noona used the moment the photographer checked the results to sidle up to me. Her gaze locked on the front of my pants.
“I’ll call you after class. You need sexual processing, don’t you?”
She breathed hot air against my ear as she whispered.
“The academy has… a very private sexual processing room that only the two of us can use.”
That voice left no room for refusal.
“All right, everyone. We’re finished for today, so you’re free to head home.”
At the teacher’s words the students packed their bags with faintly regretful faces. Then she added, looking straight at me:
“Sihyuk, stay behind a moment.”
Chaerin, sitting beside me, tilted her head in confusion.
“Is something up with Sihyuk?”
“Ah, the male students have an aptitude questionnaire they have to fill out separately instead of choosing a university major. It’ll only take a minute.”
Teacher Seol answered as if it were nothing. I had to admire how smoothly she lied.
Chaerin and Subin messaged that it was dangerous for a guy to walk alone and that they would wait at the main gate. By the time those messages arrived, I was already following Seol-noona down the hallway.
She walked with her hips swaying sexily inside the suit pants that stretched tight over her ass—almost as if she were deliberately seducing me. On second thought, that was probably exactly what she intended.
“Most people don’t know this, but the academy has a male-only sexual processing room.”
“A sexual processing room?”
“It usually sits empty because men rarely ask for processing.”
There was an ordinary door next to the infirmary. The plaque on it read Male Sexual Processing Room.
When we stepped inside it felt cool, as though no one had used it in a long time. There was a bed and a sofa, and farther in a bathroom and shower as well.
The moment the door closed, Seol-noona radiated an alluring aura completely different from her usual self and asked:
“Blowjob, handjob, or titjob. Which one do you want?”
Her tone was pure confidence, as if she were skilled at all of them. Instead of answering I simply walked up to her, slid my left arm around her waist, and kissed her.
“Mmph…!”
I felt her body go rigid at the sudden kiss. Ignoring that, I devoured her soft lips. My first kiss of this life was incredibly hot. I didn’t even push my tongue in; just rubbing our lips together was more than enough.
“W-wait… Sihyuk…”
When the kiss ended, the earlier confidence had vanished without a trace; she stammered, clearly flustered. I pulled her tighter against me and spoke shortly.
“Teacher.”
“……”
“I want to have sex.”
At my blunt words Teacher Seol’s face flushed bright red. She couldn’t say a thing; she only hung her head. The picture she made was exactly that of a pure virgin.
I smiled and reached for her clothes.
“Take them off.”