Kim Vincent (V) – 25, twin brother of Taehyung, CEO of his own company. V is tall, broad-shouldered, and ruggedly handsome, with piercing dark eyes and a presence that makes people instantly notice him. Calm and confident, he carries a cold, teasing aura that hides the truth of his emotions. He is clever, observant, and never lets his guard down, especially around his brother. Despite his aloof and sometimes intimidating demeanor, V secretly knows everything about Taehyung’s feelings, though he pretends to see him only as family. He is precise in his decisions and leads his company with authority, but beneath that, his heart struggles with the tension between duty, love, and desire. Have anger issues and short temperature

Kim Taehyung – 22, twin brother of V, gentle and pure-hearted. Recently graduated and now working at V’s company, Taehyung is soft-spoken, kind, and innocent. His warm smile and tender nature draw people in naturally, making him the emotional center of the story. He is unaware of the depth of V’s awareness of his feelings, yet every glance and subtle gesture from his twin leaves him flustered and longing. Taehyung is hardworking and sincere, balancing the demands of his job with his quiet, gentle personality. His innocence and trust make him vulnerable to teasing, but also endear him to V and everyone around him.

Mr Kim Minho – Father of the twins. Serious, disciplined, and protective, he is a successful businessman who prioritizes the well-being of his sons. Though strict, he deeply cares for their happiness and supports them in subtle ways, ensuring they have the stability to pursue their goals.

Mrs Kim Yejin – Mother of the twins. Elegant, graceful, and nurturing, she is the emotional anchor of the family. Watching over the twins with gentle care, she understands their hidden feelings and provides warmth and guidance, balancing her husband’s strictness with her tender approach.

Jungkook – CEO and close friend of V. Tall, athletic, and loyal, Jungkook is protective of his friends and respects their boundaries. He observes the dynamic between the twins and provides guidance when necessary, keeping V grounded without interfering in his private affairs. His presence is steady and reassuring, complementing the intensity of V’s personality.

Jimin – CEO and close friend of V. Cheerful, sociable, and stylish, Jimin balances V’s cold exterior with humor and companionship. He is observant, noticing V’s rare displays of subtle care, and often provides light-hearted moments to ease tension. Jimin is loyal and trusted by V, acting as a confidant and sometimes teasing his friend to bring out hidden emotions.

Suga – Taehyung’s only close friend. Calm, intelligent, and slightly mysterious, Suga is loyal and protective, always noticing subtle details about Taehyung’s behavior. He supports Taehyung quietly, giving advice when necessary, and ensures that the gentle twin is never completely lost in the shadows of his older brother’s intimidating presence. Suga’s quiet understanding and reliability make him an indispensable part of Taehyung’s life.

The Kim mansion was always quiet in the mornings, but the silence between the twins felt louder than anything else.

Taehyung stood by the large window in his room, sunlight brushing against his soft features as he adjusted his tie. Today was his first official day working at V’s company. His heart should have felt proud—excited, even—but instead, it felt unbearably heavy.

Working under his own twin brother.

Vincent.

V.

Downstairs, V was already dressed in a perfectly tailored black suit, posture straight, expression calm and unreadable. As the CEO of his company, he carried authority effortlessly. Every movement was precise, every word calculated, every glance controlled.

When Taehyung entered the dining room, their eyes met for only a second.

“Ready?” V asked, his voice low and steady.

Taehyung nodded softly. “Yes… hyung.”

That word.

Brother.

It lingered between them like fragile glass.

V looked away first. “At work, call me ‘CEO Kim.’ Don’t make things complicated.”

Taehyung forced a small smile. “Of course… CEO Kim.”

The words hurt more than he expected.

They drove to the company in silence. Taehyung watched the city blur past the car window, his faint reflection staring back at him. He wondered if V ever noticed the way his heart trembled in his presence. If he ever sensed the feelings Taehyung tried so desperately to bury beneath smiles and obedience.

At the company entrance, employees immediately bowed.

“Good morning, CEO Kim.”

V’s presence shifted instantly—cold, powerful, untouchable.

Taehyung followed a few steps behind, suddenly feeling smaller despite sharing the same face, the same blood.

Inside the private elevator, silence surrounded them again.

“You don’t have to look so nervous,” V said without turning his head.

“I’m not,” Taehyung replied softly, though his fingers were tightly intertwined.

V finally glanced at him, eyes sharp and unreadable. “You are.”

For a brief second, something flickered in V’s gaze—concern, perhaps. Or regret. It vanished just as quickly.

“I won’t treat you differently,” V continued. “At work, you’re just another employee.”

Taehyung lowered his eyes. “I know.”

That was what hurt the most.

The elevator doors opened to the executive floor with a quiet chime.

As Taehyung stepped out, he felt the weight of the building, the expectations pressing against his shoulders, and the invisible distance between them. They were twins. They shared childhood memories, secrets, laughter.

Yet why did V feel worlds away?

Before walking into his office, V paused.

Without turning around, he spoke quietly, almost too soft to hear.

“If anyone gives you trouble… tell me.”

Taehyung’s eyes widened slightly.

It wasn’t cold. It wasn’t distant. It was protective.

“I will,” he whispered.

V walked into his office, the door closing gently behind him.

Taehyung stood there a moment longer, his chest tight yet strangely warm.

Maybe V wasn’t as distant as he pretended to be.

And maybe working together would either pull them closer—

Or finally break the fragile line between brotherhood and something far more dangerous.

The executive floor was colder than Taehyung expected.

Not because of the air-conditioning.

But because of him.

Throughout the morning, Taehyung tried to focus on his new tasks. Papers. Reports. Meetings. Everything felt overwhelming, yet he refused to make mistakes. He didn’t want V to regret letting him work here.

Across the glass walls of the CEO office, V could see everything.

And he noticed.

He noticed the way Taehyung bit his lip when concentrating.

The way he politely bowed to every senior staff member.

The way some employees whispered when they realized the new hire looked exactly like their CEO.

“Is that his brother?”

“They look identical…”

“Why is he working as a regular employee?”

The whispers didn’t go unnoticed.

During lunch break, a female manager approached Taehyung with a bright smile.

“If you need help adjusting, I can guide you,” she said sweetly. “You don’t have to struggle alone.”

Taehyung smiled politely. “Thank you. I appreciate it.”

From inside his office, V’s jaw tightened.

He told himself it didn’t matter.

Taehyung was just an employee.

Just his brother.

But when the manager lightly touched Taehyung’s arm while laughing at something he said—

V stood up.

The sudden movement startled his secretary.

“CEO Kim?”

“Call Manager Lee to my office. Now.”

—

A few minutes later, Manager Lee stood nervously in front of V’s desk.

“You wanted to see me, sir?”

V leaned back in his chair, eyes cold and unreadable.

“I don’t remember assigning you to mentor the new employee.”

“I was only helping—”

“You are here to work,” V interrupted calmly. “Not socialize.”

Her face paled. “Y-Yes, CEO Kim.”

“You may leave.”

As she walked out, she avoided Taehyung’s eyes.

Taehyung felt confused.

What just happened?

—

Later that evening, the office had mostly emptied.

Taehyung was still at his desk, rechecking documents.

A shadow fell over him.

“You’re staying late?” V asked.

Taehyung looked up, surprised. “I made a few mistakes. I want to fix them.”

V sighed quietly. “You don’t need to prove yourself.”

“I do,” Taehyung replied softly. “Especially to you… hyung.”

The word slipped out again.

V’s expression changed.

The office lights reflected in his dark eyes as he stepped closer.

“At work,” V said quietly, “I told you not to call me that.”

Taehyung stood slowly.

“Then stop acting like my hyung,” he whispered.

The words hung in the air.

For the first time, Taehyung looked hurt.

“You say I’m just an employee. You act cold. But when someone gets close to me… you react.”

V froze.

Silence stretched between them.

“Why?” Taehyung asked, his voice barely steady. “Why do you care so much?”

V’s composure cracked.

He reached out without thinking, gripping Taehyung’s wrist gently but firmly.

“Because,” V said, his voice lower than ever, “I don’t like seeing anyone touch what’s mine.”

Taehyung’s breath caught.

“Mine?” he whispered.

V realized what he had said.

Slowly, he released him.

“You’re my responsibility,” V corrected quickly. “As your hyung.”

But his eyes told a different story.

Taehyung felt it.

The truth V refused to say.

And as they stood there, too close once again, both of them understood—

This wasn’t just brotherhood anymore.

And the cracks in V’s perfect mask were starting to show.