His but Never Mine - J.JK × K.SJ FF

The Manly Change : Time For You To Be Mine

It had been a month, and Jin was growing increasingly restless. The absence of Jungkook and Jimin, who had claimed they were going on a simple trip, weighed heavily on him. Every day felt longer, and the house seemed quieter without Jungkook's familiar presence. His absence gnawed at Jin in a way he couldn’t quite explain, making his heart feel oddly heavy.

Who stays away for a whole month on a trip? Jin thought to himself for what felt like the hundredth time. His mind constantly returned to Jungkook, something he had never admitted to anyone, not even Taehyung.

"Taehyung, it’s been a month already... why haven't they come back? They said it would just be a couple of weeks!" Jin said, the anxiousness clear in his voice.

Taehyung tried to calm him down, though he had noticed the unusual worry in Jin's behavior lately. "Jin, relax. They said they’d be back today, remember? It’s probably just travel delays. You know how impulsive Jimin can be."

Jin sighed, running his hand through his hair as he stood up. "I don't know... it just feels weird. I don’t like not seeing Jungkook every day." He walked out to the garden, his mind still filled with restless thoughts.

Recently, everything about Jungkook felt... different. He wasn’t sure when it had started, but lately, being apart from him had felt unbearable. Even when they were together, there was a strange tension, like he was missing something vital.

As Jin walked, deep in thought, he didn’t notice the figure approaching him from behind. He was too caught up in his mind, replaying old memories of Jungkook’s shy smiles and his quiet presence. When Jin saw a small rock on the ground, he pouted childishly, deciding to kick it. But the action backfired as he stumbled, losing his balance. His eyes shut tight, bracing for the impact with the ground—yet it never came.

A pair of strong arms wrapped around him, preventing the fall. The scent that filled his nose was strangely familiar but... different. More masculine, stronger, like it had matured somehow. And then, a voice—low, husky, deeper than Jin remembered—spoke close to his ear.

"When are you going to stop being so clumsy, hyung?"

Jin’s eyes flew open in shock, and his heart skipped a beat as he looked up to see the face he knew so well yet almost didn’t recognize.

"J-Jungkook?" Jin stuttered, his voice trembling. He scrambled to stand, his hands reaching out to hold Jungkook’s face, feeling the solid warmth beneath his palms.

"K-Kookie... is that really you?"

Jungkook smiled, but it wasn’t his usual shy, bunny-like grin. This smile was confident, self-assured. The Jungkook in front of Jin was almost unrecognizable, but the eyes... those were the same, even if they seemed sharper now, more intense.

Jin stepped back, his gaze trailing from Jungkook’s face down to his body. The boy who used to wear oversized black hoodies now stood before him in fitted black clothes—a tight black tee under a sleek jacket, ripped black jeans hugging his muscular legs. His hair, which had always flopped over his forehead and eyes, was styled differently now, in a loose curtain cut with gentle curls framing his face. His features seemed sharper, more mature.

And then there were the changes that left Jin speechless. Jungkook's eyebrows were pierced, and a tiny stud gleamed from the corner of his lip. Jin's gaze fell to Jungkook’s arm, where intricate tattoos decorated his skin, flowing from his wrist up to his bicep, visible even under his jacket.

"W-what the hell happened to you?!" Jin gasped, staring at Jungkook in utter shock. He couldn’t tear his eyes away from him. This couldn’t be the same shy bunny Jungkook... could it?

Jungkook chuckled softly, running a hand through his hair as he gave Jin that confident smile again. "Just a little change, hyung. How do I look?"

Jin didn’t even realize his mouth was hanging open until Jungkook’s hand reached out to gently push it closed. His touch was light, but Jin could feel the strength in his fingers. The tattoos, the piercings... the way Jungkook carried himself now... everything about him radiated a raw, powerful energy.

"You... you’ve changed so much..." Jin whispered, his heart pounding in his chest. It wasn’t just the physical changes—it was the aura Jungkook exuded. He was no longer the soft, quiet boy Jin had known all these years. This Jungkook was bold, confident, and something about him made Jin’s pulse quicken in a way he didn’t quite understand.

The realization that Jungkook had changed so dramatically in just a month hit Jin hard. His bunny Jungkook had grown into a man right before his eyes, and for some reason, it left him breathless. He couldn’t understand why, but he suddenly felt nervous under Jungkook’s intense gaze.

Jungkook stepped closer, his hand lingering on Jin’s shoulder for just a moment longer before he let it fall to his side.

"I missed you, hyung," he said softly, his voice so deep that it sent shivers down Jin’s spine.

Jin swallowed hard, unable to find the right words. What had happened on that trip? he wondered. But more than that, why did it feel like everything had changed between them now?

Jin couldn't help but feel a strange tension as he led the way inside. His mind was racing, still processing the drastic change in Jungkook. His little Kookie was no longer the shy, soft-spoken boy who used to follow him around like a lost puppy. Now, Jungkook’s presence was commanding, overwhelming even, and it stirred something deep within Jin that made him uneasy.

What happened to him on that trip? Jin wondered as he absentmindedly scratched the back of his head. He kept stealing glances at Jungkook from the corner of his eye, trying to reconcile the person walking behind him with the boy he’d known his whole life. Every step Jungkook took was confident, purposeful, as if he was walking with a plan in mind, and it made Jin’s heart race for reasons he couldn’t understand.

"Where’s Mom, Dad, and hyung?" Jungkook’s voice broke the silence, and Jin nearly flinched. The way Jungkook spoke now—so casually, yet with an edge of authority—was unsettling. His voice was deeper, more assertive, and it sent an odd shiver down Jin’s spine.

"They’re inside," Jin muttered, his voice coming out quieter than he intended. He tried to clear his throat, but the uneasiness still lingered. "Come in."

Jin walked ahead, but not without stealing one more glance at Jungkook, his eyes trailing down his figure again. How did he change so much? His heart pounded in his chest as he hurried inside, trying to shake off the strange sensations swirling within him.

Jungkook watched Jin’s retreating form, his smirk widening as he observed how flustered Jin seemed. He let his gaze fall to the ground, his eyes following the exact path Jin had taken, almost like he was tracing Jin’s footsteps. Slowly, deliberately, Jungkook took each step, mimicking Jin’s every movement with a quiet chuckle.

Just wait, hyung, Jungkook thought to himself, his eyes gleaming with determination. You have no idea what's coming...

As Jungkook approached the door, he whispered under his breath, his words carrying a possessive weight, Hyung, it’s time for you to be mine.

The words echoed in the quiet air, filled with a dangerous promise, as Jungkook followed Jin inside, his mind set on one thing—claiming what had always been his.