HER PROFESSOR STEPBROTHER PT.1

CHARACTERS:-

Jung Hoseok

Age:- 27 yrs old

Stepbrother of yn

Jung yn

Age:- 20yrs old

---

AUTHOR'S POV

Jung YN sat at the kitchen table, her textbooks sprawled around her, brows furrowed in frustration. It was hard enough being in her final year, but the pressure of this one subject was almost unbearable. Especially since her professor was none other than her new stepbrother—Jung Hoseok.

Since her father, Jung Hyung, had married Hoseok’s mother, Liana, their two worlds had collided into one complicated family. Now, they all lived together under one roof—awkward glances, forced smiles, and an undeniable tension hanging in the air whenever Hoseok was around.

That afternoon, YN had stayed back after college, desperate to understand the complex theories she just couldn’t wrap her head around. As she sighed, sinking deeper into her chair, her phone buzzed.

Hoseok: “Having trouble? Come to my room. I’ll explain.”

YN’s heart skipped a beat. Was it normal to feel this nervous at the thought of stepping into her stepbrother’s room? Especially when he was her professor? She bit her lip, then replied:

YN: “Okay.”

The house was quiet as she climbed the stairs to Hoseok’s room. She could hear faint music playing — soft jazz, the kind Hoseok always liked. The door was slightly ajar, and she hesitated for a moment before knocking lightly.

“Come in,” his deep voice called.

YN stepped inside, her eyes immediately drawn to the piles of books and notes scattered across his desk. Hoseok looked up from his chair, adjusting his glasses. His usual confident smile softened as he saw her uncertainty.

“Sit,” he said, patting the space next to him.

YN settled on the edge of the bed, pulling her notebook closer. Hoseok leaned in, explaining the concept slowly, his voice low and steady. The proximity made her pulse race—he smelled like fresh linen and something faintly warm, like vanilla.

“Does that make sense?” Hoseok asked, his gaze locking with hers.

YN nodded, barely able to breathe. “Yeah... much better.”

For a moment, silence stretched between them. Then Hoseok reached out, brushing a stray lock of hair behind her ear.

“Don’t hesitate to ask for help anytime,” he murmured.

YN’s cheeks flushed. “Thanks, Hoseok.”

Outside the door, the house was still — but inside that small room, the boundaries between stepbrother and professor were already beginning to blur.

---

YN was just about to leave Hoseok’s room, her mind buzzing with new understanding and a flutter she wasn’t ready to admit. She stood up carefully, clutching her notebook to her chest.

But then—her foot slipped on the edge of the rug.

Time slowed as she lost balance, and before she could steady herself, she tumbled forward.

The next thing she knew, she landed hard—right on top of Hoseok.

Their bodies collided with a soft thud. Hoseok’s arms instinctively caught her, his chest pressing against hers. The air between them instantly thickened, their breaths mingling in the small space.

“Are you okay?” Hoseok’s voice was low, concern and something else deeper shining in his eyes.

YN’s heart pounded in her ears.

“Y-yes… I’m fine.”

She tried to pull away, but his hands gently held her in place, steadying her. For a moment, neither of them moved—too caught up in the sudden closeness.

His fingers brushed lightly over her arm. “You have to be more careful,” he whispered, his breath warm against her cheek.

YN swallowed hard, the forbidden nature of their closeness crashing over her like a wave.

“I... I didn’t mean to—”

Hoseok’s hand tilted her chin up, forcing her to meet his gaze. His dark eyes searched hers as if trying to read her thoughts, lingering longer than they should.

The room felt smaller, the world outside disappearing.

“YN...” he breathed her name like a secret.

She closed her eyes briefly, then slowly pulled back, breaking the spell.

“I should go,” she said, her voice barely above a whisper.

Hoseok nodded, still holding her hand for a moment before releasing it.

“Anytime you need help,” he said softly, “you know where to find me.”

YN nodded, her cheeks aflame, and hurried out of the room before she could lose control.

---

The next day, the campus buzzed with its usual energy — chatter echoing through the courtyard, sunlight spilling across the grass. Hoseok sat at one of the shaded faculty tables, his laptop open but mostly ignored. His attention had drifted elsewhere.

Across the quad, at one of the stone benches, YN sat sandwiched between her two friends — Kim Taehyung and Jeon Jungkook. The three of them were laughing over something on Taehyung’s phone, YN covering her mouth to hide her wide smile.

Hoseok’s eyes narrowed slightly.

Taehyung leaned closer, his hand brushing YN’s shoulder as he showed her the screen. Jungkook, on her other side, offered her a bite from his lunch, and she accepted without hesitation, laughing again.

It was harmless. Completely normal.

And yet, something inside Hoseok bristled.

He told himself it wasn’t his business. They were her friends, nothing more. But he couldn’t shake the heat curling low in his chest at the sight of her so relaxed — so open — with them. That laugh. That ease.

The same YN who had practically bolted from his room last night, cheeks flushed, eyes downcast.

He forced his gaze back to his laptop screen, fingers drumming against the keyboard. But his ears still caught the sound of her voice drifting across the courtyard.

When Taehyung leaned in again, whispering something that made her burst into giggles, Hoseok’s jaw tightened. He took a long sip from his coffee, watching them from over the rim.

A shadow fell across his table. It was Professor Han from the literature department.

“Daydreaming, Hoseok?” he teased with a sly smile.

Hoseok cleared his throat. “Just… observing.”

Professor Han glanced toward the direction he had been looking and smirked knowingly. “Your step-sister?”

His expression stayed neutral. “My student,” he corrected firmly.

But even as he said it, his gaze slid back to where YN was — her hair catching the sunlight, eyes bright with laughter — and he knew that label wasn’t the whole truth anymore.

---

The late afternoon sun painted the streets in warm gold as Taehyung and Jungkook walked YN home. They chatted easily, their laughter spilling into the quiet neighborhood.

As they turned the corner to her house, YN’s steps slowed. A sleek black car was already parked neatly in the driveway.

She recognized it instantly — Hoseok’s.

“He’s home early,” she murmured, more to herself than to them.

Taehyung grinned. “Guess Professor Jung’s got no evening lectures today.”

Jungkook raised a brow. “Or maybe he just missed his favorite student.”

YN rolled her eyes, playfully shoving him. “Shut up.”

After a quick goodbye at the gate, she walked inside. The faint, savory scent of something cooking hit her immediately.

Her eyes widened when she stepped into the kitchen. Hoseok stood by the counter, sleeves rolled up to his elbows, stirring something in a pan. He glanced over his shoulder, his lips curving slightly.

“You’re home,” he said casually, though his eyes lingered on her for a beat too long. “Get fresh. I made something to eat.”

YN nodded. “Okay.”

As she left for her room, she couldn’t help but notice the details — Hoseok was wearing a black fitted T-shirt that clung just enough to hint at the muscles beneath, paired with grey sweatpants that hung low on his hips. His hair was pushed back loosely, a few strands falling into his eyes.

In her room, YN quickly changed out of her college uniform. She pulled on an oversized cream sweater that slipped slightly off one shoulder, paired with soft lilac shorts. Her hair, once tied up for the day, now fell in loose waves down her back.

When she returned to the kitchen, Hoseok had plated the food — steaming bowls of pasta with garlic bread on the side.

He looked up from the counter, his gaze briefly dipping from her face to the exposed curve of her shoulder before he quickly refocused on the food.

“Sit,” he said, sliding a plate toward her. “It’s better hot.”

She smiled faintly, taking a seat at the small dining table. “Thanks… it smells amazing.”

As he joined her across the table, the warm glow from the kitchen light softened his features — but the way his eyes met hers held that same unspoken charge as last night.

---

The clink of forks against plates filled the kitchen as they ate in comfortable silence. The smell of garlic and butter lingered in the air, the warm light making the moment feel… almost domestic.

Hoseok twirled his pasta slowly, eyes flicking up to study YN. She was focused on her plate, humming softly to herself.

He wanted to ask. Who exactly are Taehyung and Jungkook to you? Why do they make you laugh so easily?

But he couldn’t just blurt it out — that would be too obvious.

Instead, he leaned back in his chair, pretending to think about something.

“So…” he began casually, “I saw you with your friends today during lunch. Looked like you were having fun.

YN smiled, a little shy. “Yeah, we always do.”

He took a sip of water, then set the glass down slowly. “It reminded me of my college days. We had a group too — two girls and one guy. People always assumed… you know, there was something going on with one of us.”

YN glanced at him, curious. “Really? Was there?”

He smirked. “Maybe. Or maybe it was just friendship. But it’s funny how people like to guess.”

She chuckled. “Yeah, people think the same about us sometimes.”

“Us?” He raised a brow, feigning casual interest.

“Me, Taehyung, and Jungkook,” she explained, picking up her garlic bread. “We’ve been close since first year. Taehyung’s like… this overprotective older brother type. Jungkook’s more like a partner-in-crime — we mess around a lot.”

Hoseok nodded slowly, hiding the flicker of relief that passed through him. “So… no rumors that are actually true?”

YN shook her head with a small laugh. “No. They’re my friends, that’s it.”

He smiled faintly, stabbing another piece of pasta. “Good. Friends are easier to trust.”

YN tilted her head. “Easier to trust?”

Hoseok’s gaze met hers, steady and unreadable. “Yeah… less complicated.”

For a moment, the air between them thickened again, that unspoken tension quietly threading itself through the ordinary dinner.

---

The last bite of garlic bread disappeared from YN’s plate, and she pushed back her chair. “I’ll wash these,” she said, gathering the plates before Hoseok could react.

But his voice stopped her halfway to the sink. “YN, you go and study. I’ll do it.”

She turned to face him, a playful smile tugging at her lips. “You cooked… let me at least wash the dishes. Fair deal.”

His brows lifted slightly. “Fair deal, huh

“Yes,” she said firmly. “Now don’t argue.”

He stood and carried the remaining glasses to the counter, his steps unhurried. “Fine. But if you insist, then… help me. Deal?”

Her smile widened. “Deal.”

They stood side by side at the sink — YN rinsing the dishes, Hoseok scrubbing them with slow, practiced movements. The warm water steamed gently, filling the air with the faint scent of lemon dish soap.

At one point, their hands brushed when she passed him a plate. Neither of them moved their hand away right away.

“Careful,” Hoseok murmured, his voice quiet but close enough to make her heart trip. “You’re going to drop it.”

She swallowed. “I wasn’t going to.”

“Still,” he said, glancing down at her with that unreadable look, “I’d rather you don’t hurt yourself.”

They continued in silence, the sound of running water and clinking dishes filling the kitchen. Occasionally, their shoulders bumped — accidental, but each touch felt heavier than it should.

When the last glass was set on the drying rack, Hoseok reached over and turned off the tap. “There,” he said softly. “Teamwork.”

YN looked up at him, a drop of water sliding down her wrist. “Teamwork,” she echoed.

For a heartbeat too long, they just stood there, the air charged again. And then Hoseok stepped back, giving her space — though his eyes lingered until she left the kitchen.

---

TIME SKIPS

Two months later, everything between YN and Hoseok felt… different.

The awkward hesitations, the careful pauses — gone. Now, whenever she was stuck on a topic, she didn’t even bother knocking before stepping into his room. After all, he’d told her more than once: “No need to knock. Just come in.”

It had become routine. His room always smelled faintly of coffee and his cologne, and YN had grown used to perching at the edge of his bed while he explained something with that patient, low voice of his. Sometimes they’d drift into unrelated conversations, forgetting about the books altogether.

This afternoon, she was halfway through a math problem when Liana’s voice called from downstairs, “YN! Hoseok! Get ready — we have to leave for the wedding in an hour!”

They both froze.

Hoseok leaned back in his chair. “A wedding?”

YN groaned. “I don’t even know the people getting married.”

Before they could protest further, her father’s voice carried up the stairs. “No excuses! Half an hour. YN, go get ready!”

They exchanged a look — the kind that said we’d rather be anywhere else. But neither of them dared argue with Jung Hyung when he used that tone.

Half an hour later, the house was buzzing with activity.

YN emerged from her room wearing a soft blush-pink chiffon saree, draped elegantly over a sleeveless blouse with delicate pearl embroidery. Her hair was curled loosely, a few strands framing her face, and she’d chosen small pearl earrings to match.

Hoseok descended the stairs at the same time, dressed in a perfectly tailored charcoal-grey suit over a black dress shirt, the top two buttons casually undone. The faintest trace of cologne followed him, and his hair was styled neatly but not overly formal.

For a brief moment, they both paused, eyes scanning each other from head to toe. Neither said anything, but the silence spoke enough.

The drive to the wedding was filled with polite small talk between their parents. By the time they reached the decorated venue, the air was heavy with the scent of marigold and jasmine.

The four of them made their way to greet the bride and groom. Jung Hyung shook hands warmly with the groom’s father before gesturing to the rest of the family.

“This is my daughter, Jung YN,” he said proudly, before turning to the others. “And this is Jung Hoseok… YN’s brother. And my wife, Liana.”

The word brother seemed to hang in the air a second too long.

YN’s smile didn’t falter, but her chest tightened. Hoseok, too, kept his expression smooth, nodding politely.

Inside, though, they both felt the same hollow twist — that reminder of the role they were expected to play in public.

Still, they acted as if it didn’t matter, exchanging no more than a fleeting glance before turning their attention to the couple in front of them.

But under the polished smiles, the same thought echoed quietly between them: If only they knew.

---

The wedding hall glittered under chandeliers, the long tables lined with silver dishes and steaming platters. Music played softly in the background, and the hum of conversations filled the air.

YN sat beside Hoseok, across from their parents, politely nodding to relatives she didn’t know. The aroma of rich curries and freshly baked bread made her stomach growl.

She had just taken a bite of her rice when Hoseok’s voice cut in, low but clear. “You should try this,” he said, lifting a piece of tender, spiced chicken from his plate.

Before she could react, he held the fork out toward her. Instinct took over — she leaned forward and took the bite, her lips brushing the edge of the fork.

The flavors burst on her tongue, and without thinking, she pouted slightly. “Mmm… it’s good.”

Hoseok’s eyes caught the pout — and lingered. For a split second, his expression softened, almost as if he’d forgotten where they were.

“You pout when you like something?” he asked quietly, leaning closer so only she could hear.

Realizing what she’d done, YN’s cheeks warmed. “I—no! That wasn’t on purpose.”

His lips curved into the faintest smirk. “Sure.”

From across the table, Liana said something about the dessert section, breaking the moment. Hoseok sat back, returning to his plate as if nothing had happened — but YN could still feel the weight of his gaze now and then, like an invisible thread between them in the crowded room.

---

STAY TUNE FOR PART 2 OF THIS......