Episode 14. First Lesson — Training, First Experience, Innocent Girl, Seduction

The board game cafe opened a full hour before their reserved time.
Minwoo had arrived first and was sorting card game boxes on the table when Seoa pushed through the door.
"Hi, oppa."
"You're early."
"I couldn't let you do all the setup by yourself, could I?"
Seoa said it as she set down her bag. White blouse, an A-line skirt ending just above the knee. As she sat, the hem rode up slightly, and the curve running from her narrow waist down to her hips stood out in sharp relief.
Minwoo looked away.

Seoa took out a notebook and spread it open, the way someone checks over their notes.
"What's that?"
"Oh—"
She moved to close it. Minwoo was faster — a light tug, and it was in his hands.
The page lay open.
There were drawings. Small, painstakingly neat ones, clearly copied by hand — pencil in one fist, eyes on a screen. Arrows marked angles, with notes written beside them.
"Apparently this one reaches deeper."
"Waist angle is important."
"Not supposed to do too much at once??"
Two question marks sat at the end of the last note.
Minwoo turned the page. There was more. This one had three stars beside it — something she especially wanted to try, it seemed. Beneath it, written small: "Would it be okay to ask oppa?"
Minwoo paused for a moment.
Would it be okay to ask oppa — that single line.
"Seoya..."
"...I was just curious."
Seoa's face went red. Her eyes went wide — she was the type whose eyes grew big whenever she looked at something intently, and right now the flustered panic made them even wider.
"All of it? You're curious about all of it?"
"...Yes."
Very quietly. Honestly.
Minwoo set the notebook down.
The page with the three stars stayed in his mind. Would it be okay to ask oppa — she had already wanted to ask, back when she was writing it into that notebook.
"We've still got an hour before everyone gets here."
Seoa looked at Minwoo.

They moved to the sofa. The corner seat, hidden from the other tables.
Minwoo stood in front of her.
"Hands up."
Seoa hesitated. Then, slowly, she raised her hands. By herself.
That was her answer.
Minwoo caught both her wrists in one hand and held them above her head.
Seoa went rigid. She tried to lower her arms, but held fast as they were, there was no pulling them back.
Minwoo undid the buttons of her blouse. One by one. Her collarbone appeared. Then her bra. He pushed it up out of the way.
Seoa's bare breasts came into view — round and firm, a soft curve flowing down beneath her narrow collarbone.

Seoa tried to look away.
"Look at me."
Minwoo said it low, and she froze.
His lips found her breast — a light touch at first, then the tip of his tongue tracing slow circles. She could feel the tip stiffening under it.
"Ah—!"
She hadn't known a feeling could come straight from her chest like this. Like a current, running all the way down beneath her spine.
Minwoo sucked harder.
"Haaah—"
The hand on her wrists still wouldn't let go. Both hands bound above her head, there was nowhere to hide her body — everything bared to Minwoo's eyes, his lips pressed right there against it.
And at the same moment, his other hand slipped under her skirt.
"...Hah—"
Fingertips touched her over her panties. Lightly — tracing circles as they searched out the most sensitive spot.
The feeling from her chest and the feeling from below arrived at the same time.
"Mmm— oppa—"
She tried to hold it in, but it slipped out.
His fingers pushed the fabric of her panties aside and touched her directly. She was already wet enough — warm, sticky heat soaking his fingertips.
"Haaah—"
As Minwoo sucked harder at her breast, his fingers slid slowly inside. Up and down, along her inner walls; the sound of clinging and releasing echoed from his fingertips.
"There— right there—"
Seoa gasped, not even knowing how to make it feel better. Minwoo lingered longer on that spot, more delicate, while his lips moved to her other breast.
A tremor ran through the hand gripping her wrists. Both hands still bound above her head — her body pressed itself toward Minwoo on its own.
"Haa— oppa— something's wrong with me— something—"
The rhythm quickened. His fingers sank deeper. The feeling from her chest rode the one below and multiplied.
"You can let go."
At those words, something came undone.
Every muscle in her body locked, and her breath stopped. A heartbeat of perfect stillness.
Her insides clenched — a wave spreading from below upward, squeezing around his fingers as warmth flooded out all at once.
"Haaah—!"
Her back arched hard. Her toes curled in.

For a while, neither of them said anything.
Seoa caught her breath.
Her heart was still racing. The place his fingers had left behind felt empty. That was strange — she'd been given plenty. And yet that spot seemed to want more. Not fingers. Something else.
"Oppa."
"Hmm?"
"When is everyone coming?"
Minwoo checked his watch.
"Fifty minutes."
Seoa picked up the notebook and opened it. Minwoo looked — it was a page covered in drawings.
"...Can't we do it now?"

Minwoo stood up.
"Turn around."
Seoa turned. She pushed her skirt up over her hips and slid her panties down slowly — along her thighs, all the way to her ankles — then lifted one foot free.
Minwoo held the panties in his hand.
Seoa looked back over her shoulder.
"I'll hang on to these for now."
Her face went red.
"We'll think about that later."
"...Later?"
And then, from behind, he entered her slowly.

Seoa's breath broke.
It was different.
So different from his fingers. The feeling of her insides being pushed open. Of being filled to the brim. This was something she was discovering for the very first time — this sensation. Where it came from. How it came.
"Ah— wait—"
Minwoo stopped.
"Are you okay?"
"...Just a moment."
He held still in that position. Minwoo waited. Seoa breathed, and as the tension melted away, a different feeling rose in its place — the fullness grew familiar, and with it she understood this wasn't a bad feeling at all. So this was what came after the pain.
"You can... move now."
Minwoo began to move, slow and careful.
"Nn—"
It was different. A sensation arriving from another direction than his fingers — as if something were resonating deep in her belly. A discovery: that a place like this had existed in her own body all along.
Her body grew hot along with him. The sound of clinging and pulling fell into rhythm.
Minwoo murmured low beside her ear.
"Seoya — your body's feeling every bit of it."
"...Mmm—"
It was a thing she shouldn't be hearing, and it made her burn hotter anyway — because it was true. Because her body really was feeling every last bit.
The angle changed. A place she had never felt before, deep inside her belly, was grazed.
"Haaah—"
Her back lifted. All on its own — as if to take even more.
So this was what the notebook had shown her. That the angle mattered. Trying it herself, she saw how different the drawings and the real thing were.
The rhythm quickened.
"Oppa— I'm— again—"
Her whole body pulled taut and her breath stopped. This time it came from somewhere deeper. Different from before — deeper, longer, from a place his fingers had never reached.
Her insides contracted as the wave spread, heat trickling down.
"Haaaah—!"
She shuddered through it.

She caught her breath.
Seoa looked at the notebook, and the next page caught her eye.
"Oppa."
"Hmm?"
"The one from on top."
Minwoo looked at her.
"Can we do that one?"

Minwoo lay back on the sofa. Seoa climbed on top of him.
It was awkward at first — she couldn't find the angle. When she started to slip, Minwoo's hands caught her hips.
"Slowly. You control it, Seoa."
She lowered herself slowly.
"Ah—"
The depth was hers to decide. Shallow at first. Then a little more. A little more still, as she searched out that feeling of being filled to the very limit.
Her hips began to move. Clumsy, the rhythm uneven — until Minwoo gripped her waist and matched the beat for her, and she memorized that beat and followed it.
She was moving in search of what her own body wanted. Which depth felt best. Which angle brought a different kind of sensation.
She found one.
"Here—"
She stopped there, then started again, and her thighs trembled. A spot she had found all by herself — the very spot the arrows in her notebook had pointed to.
"Oppa— it's happening again— I feel strange—"
The second wave rose from below her belly. This one, Seoa had made happen herself. Not something Minwoo had given her — something she had found, something she had made.
Minwoo checked the time. Twenty minutes left.
He sat up.
"Seoya. Let's learn one last thing."
Seoa lifted her eyes.
Minwoo led her over to the table where the game boxes sat in tidy rows.

"Bend over."
Seoa braced her hands on the table, her upper body bent over its edge — the line running from her narrow waist to her hips laid bare.
It was one of the drawings from the notebook. Almost exactly. Minwoo came up behind her.
This time the angle was different from before. There were spots only this position could reach — a sensation rising more directly from deep inside her belly.
"Haaah—"
The hand braced on the table slipped. One of the game boxes nearly toppled.
The rhythm quickened. The wet sounds of clinging and parting grew sharper, and Seoa's voice never broke off.
Then a sound came from the cafe entrance.
The sound of the door about to open.
Seoa froze.
"Oppa— someone's—"
"It's fine. Still locked."
A knock sounded.
At that instant, something inside her clenched down even harder. The shame of nearly being caught. And yet that shame — it made everything below her belly burn hotter.
There's someone right outside that door. And they don't know. What I'm doing in here, right now.
"Haaah—"
Minwoo didn't stop.
The knock came again.
Seoa's whole body seized. She swallowed her breath.
Her insides contracted and the wave broke — this time from the deepest point, longer than before, spreading from her hips all the way up her back.
"Aaah—"
She smothered the sound with her hand. Just barely.
Her whole body shook.

"Just a moment, please!"
Minwoo straightened his clothes without a trace of hurry, walked to the counter, and opened the door.
Two members of their group stood outside.
"You're here early?"
"We were nearby getting dinner. Is Seoa here too?"
"She is — she's been helping me set up."
Seoa walked out from the sofa, smoothing her skirt as she came. One button of her blouse was undone. Her cheeks were still red.
"Hello, everyone."
She smiled, easy and natural.
Inside, she was still trembling — faintly, in tiny waves. She smiled so it wouldn't show.
One of the members looked at her.
"Seoa, why is your face so red? It's hot in here, right? The weather today—"
"Yes, a little. I've been moving around a lot."
The answer came out smooth and natural.
She couldn't afford to be found out — not the fact that there were no panties under her skirt. Not that they'd done it three times just now.
Inside her skirt, she was still oversensitive. Her thighs brushed with every step. She needed to sit, but the chair terrified her.

She sat down.
She felt it — the sensation of the chair against her, sharper and more vivid with her body still this sensitive.
Even so, she didn't let it show. She picked up her cards and the game began.
Across the table, Minwoo sorted through his cards and looked at her. Their eyes met.
Seoa dropped her gaze. Her ears went red.
Another member asked about the rules, and Seoa answered — her voice came out lower than usual, and she kept having to steady it.
Her notebook sat within reach. Midway through the game, she sneaked it out and wrote a single line.
"First lesson. The real thing was far better than the drawings."
And then she thought:
Her panties — when exactly would she be getting those back?