The mansion slept.

Chandeliers were dimmed to low glows. The thick velvet curtains shut out the moonlight, and not a single footstep echoed in the long, cold halls. The clocks ticked softly, like whispers in the silence. It was just past midnight.

And Jungkook was still wide awake.

He stood on the terrace again, leaning on the cold iron railing, the night breeze brushing against his skin. Below him, the gardens stretched in moon-washed silence. But his mind wasn't quiet.

Not after what he'd witnessed earlier.

YN, eating like a child after crying herself to sleep.

Sejin, offering permission like a bargaining chip.

A house full of wealth, yet starving for warmth.

His phone buzzed in his palm.

Kim Taehyung.

Jungkook answered instantly. "Hyung?"

"I got everything," Taehyung said, his voice low, serious. "You were right to ask. There's something strange going on."

Jungkook straightened. "Where is he?"

"Busan. The outskirts. Small fishing village near Gijang."

"Busan?" Jungkook blinked. "That far?"

"Yeah. And listen to this-he's not using his real name anymore. His official records were wiped clean about a year after his daughter died. He's going by Park Hanseok now."

"That's YN's grandfather?" Jungkook asked, brows furrowed.

"Yeah. Real name: Choi Il-Seong. Former literature professor. Highly respected, quiet man. Loved his daughter deeply. After her death, he disappeared. But here's the thing-he didn't vanish willingly."

Jungkook's grip on the phone tightened. "What do you mean?"

"There are sealed documents, Jungkook. Legal threats. Silencing orders. All funded by Sejin's firm. I had to use back channels to get anything."

Jungkook felt his jaw clench. "So Sejin made him disappear."

"Exactly. He pushed him out. Covered it up with legal power. Used his political reach to scrub his existence. Probably told YN he's just 'living quietly.' But truth is... Sejin wanted him gone."

There was a pause. Then Taehyung continued, voice more cautious.

"There's more."

Jungkook tensed. "What is it?"

"Her grandfather... he's not well. The villagers say he barely leaves the house now. Health is declining-lungs, mostly. Early-stage pulmonary fibrosis. He doesn't have much strength left. Maybe a year. Maybe less."

The words landed like a hammer against Jungkook's chest.

He looked out at the stars, suddenly feeling the cold in his bones.

"...Does YN know?" he asked quietly.

"No," Taehyung said. "And if you ask me... she deserves to."

Silence stretched between the two men.

Taehyung spoke again, softer this time. "You're changing, Jungkook. I can hear it in your voice."

Jungkook didn't answer right away. His mind was spinning.

Two years.

Two years that YN had been begging to see her grandfather.

Two years of Sejin's empty promises, soft threats, emotional chains.

And now...

Now the man might not have another year.

Jungkook wasn't supposed to care.

He was supposed to infiltrate, investigate, and destroy from within.

But tonight, for the first time in years, he wasn't thinking about revenge.

He was thinking about a girl who had cried into her mother's photo.

And a man hidden in Busan, waiting to die in silence.

"Thank you, hyung," Jungkook said finally. "Send me the address."

"I already have," Taehyung replied. "Jungkook... be careful."

The call ended.

Jungkook stared at his phone for a long time, then looked up at the night sky-endless, dark, and distant.

He had come here to punish Choi Sejin.

But fate...

Fate was giving him a reason to protect her.

And that terrified him more than any mission ever had.

---

oft gold hue over the towering gates of Yonsei University. Students buzzed around in clusters, their laughter echoing in the breeze, books tucked under their arms, iced coffees in hand, the smell of fresh ink and autumn leaves lingering in the air.

Choi YN stepped out of the sleek black car, adjusting the strap of her beige tote bag on her shoulder.

She looked effortlessly stylish-wearing a navy-blue pleated skirt that brushed mid-thigh, a crisp white shirt tucked in neatly, sleeves rolled up just enough to show her delicate wrists. Over it, she wore a light grey knitted vest, adding a preppy charm to her look. Her hair was tied in a loose ponytail with soft strands framing her face, and tiny silver hoops glinted in her ears. White sneakers completed her comfortable, put-together outfit.

Jeon Jungkook followed behind her, as always.

Today, he wore a black fitted turtleneck tucked into tailored charcoal pants, with a matching gunmetal-grey coat layered over it. Black combat boots thudded softly against the pavement as he walked. A silver chain peeked from beneath his collar, and a tactical earpiece remained discreetly nestled in his left ear. He looked like a walking enigma-lethal, unreadable, calm.

But inside?

Inside, something unexpected was stirring.

"Jeon Jungkook, behave," he muttered to himself under his breath, eyes scanning the crowd as students walked past, most offering second glances at the mysterious man trailing behind YN.

YN herself seemed in an unusually good mood. After last night's strange peace with her father, her expression today was lighter-less guarded.

She turned slightly toward Jungkook as they entered the courtyard. "You sure you wanna come in? People are gonna think you're my new professor or something."

Jungkook gave a dry glance. "I'm not here to impress college kids."

"Clearly," she teased, "you dress like a vampire who shops at Prada."

He raised a brow, unfazed. "You talk too much this early."

"Get used to it," she said with a smirk.

They entered the building and began walking toward her lecture hall when a familiar voice called out:

"YN!"

A boy jogged up to her, breathless, holding a tablet and a stack of notebooks. His hair was dyed a soft ash-blonde, glasses perched on the bridge of his nose. Tall, lanky, wearing a university hoodie and black jeans-Mark Lee, one of YN's classmates and project partners.

Jungkook's eyes immediately narrowed-not enough to be noticed, but enough for him to feel the muscles in his jaw tighten.

"Hey, you didn't reply to my text about the presentation layout," Mark said, grinning. "I reworked the opening slides, and I thought we could add your part right before the statistical analysis section. Makes more sense, you know?"

YN blinked, taking the tablet from him.

"Wait, you did all this last night?"

"Couldn't sleep," Mark shrugged.

"Besides, we make a good team.

Right?"

He smiled widely-maybe a little too brightly.

Jungkook's eyes shifted from Mark to YN. Her smile wasn't flirtatious, but she was relaxed, leaning in just enough to skim the screen.

"Yeah, this actually looks better than what I had in mind," she admitted.

Mark beamed. "Told you. We're kinda like the brains and beauty duo-"

"That's enough," Jungkook said suddenly, cutting in.

Mark paused, confused. "Uh... sorry?"

Jungkook stepped forward, not threatening-but close enough to make the space feel heavier. "We're leaving in an hour. Keep the meeting short."

YN glanced at Jungkook, brows raised.

"Excuse me, Mr. Control Freak, but I'm in college. Not prison."

Jungkook looked at her, then turned away with a blank expression. "You have class. Not time to flirt."

Mark flushed. "I wasn't flirting-"

"I didn't ask you," Jungkook said flatly, already walking away toward the hallway.

Mark gave YN a puzzled look. "What's his deal?"

YN was too busy trying not to laugh.

"Don't mind him. That's just his resting face. Looks like he's planning a murder, but he's probably thinking about protein shakes."

Still, as she walked into class, she stole a quick glance at Jungkook, who leaned against the wall just outside the glass panel.

He wasn't looking at her.

He wasn't looking at anything.

But his fists were clenched.

Inside his chest, something pulsed strangely. Foreign. Irritating.

Why did it bother him to see some college boy smiling at her like that? Why did her laugh, so natural with someone else, sit so uncomfortably in his stomach?

What the hell is wrong with me? he thought.

This wasn't part of the mission.

He was here to protect her.

To keep her close.

To destroy her father.

Not to feel something when she smiled at someone else.

Not to want to pull her away from anyone who looked at her with anything more than respect.

But no matter how hard he tried to bury it-

Jeon Jungkook was beginning to feel something that had nothing to do with revenge.

And everything to do with her.

---