Tomorrow x Together x Reader

Time Lord Beomgyu: Stay With Me

Y/N stood silently in the corner of the TARDIS, arms wrapped tightly around herself as Beomgyu darted around the console, flipping switches and pressing buttons like he was testing each one for the very first time. He was excited, she could tell that much, but it didn't help to ease the uncomfortable sensation twisting in her chest. The man she had known as Yeonjun just a day ago was gone, and this new version of him—Beomgyu, as he called himself—felt like a stranger wearing the same coat. She had fallen in love with Yeonjun: bright, soft-spoken, a man who laughed with his whole body and kissed her like the world would end if he didn't. But now she wasn't sure who this man was.
Beomgyu glanced over his shoulder at her, his eyes catching the dim blue glow of the TARDIS console.

"You're quiet," he said, his voice low and carrying a hint of humor. "Not like you."

She tried to force a smile. "Just... taking it all in."

He grinned as he leaned back against the console, folding his arms. "It's weird, isn't it? The face, the voice..." He paused, touching his jawline as if to feel the contours of his new appearance. "I think this jawline's sharper, don't you? And my voice—" He tested a few tones, trying to mimic Yeonjun's old way of speaking before chuckling deeply. "It's... different. I like it. Do you like it?"

"Yeah, it's... nice," Y/N mumbled. But her words felt hollow, even to her.

Beomgyu stepped closer, peering into her eyes with that same intensity that Yeonjun had, but it wasn't the same. There was something sharper, more analytical.

"Don't lie to me." The words were teasing, but there was an edge. "I know when you're lying, Y/N."

"I'm not lying!" she protested, but she took a step back instinctively.

He stopped, staring at her as if trying to piece her together like a puzzle. "You called me Yeonjun earlier," he said slowly. "I didn't say anything then because... well, you were panicking. But you keep saying it, and I don't like it."

"I don't—" Y/N's voice caught in her throat. She didn't know how to explain. "I don't know what else to call you."

"What about... Beomgyu." He said the name like a proclamation, like it meant more than just a word. "Yeonjun doesn't suit this new face. Beomgyu feels... it feels right."

"But you're still... you're still Yeonjun, right? Deep down?" She felt herself holding her breath, as if hoping he'd say yes, as if hoping to see that familiar smile crack across his face, the one that always made her heart race.

Beomgyu's face fell for just a second, a flicker of something—hurt, maybe—flashed across his eyes, and then it was gone, replaced by a hard mask. "No," he said bluntly. "I'm not him. I don't feel like him, not anymore."

Her lips parted in disbelief. "But I fell in love with Yeonjun. How can you just... change like that?"

"How can you not change?" he fired back, his voice growing louder as he paced around her. "This is what I do. What I am. You think Yeonjun was the first? He wasn't. And he won't be the last."

"Then why didn't you tell me?" she snapped, her voice rising with every word. "Why didn't you tell me that you could... that you could just turn into someone else?!"

"Because it doesn't matter!" he barked, his eyes narrowing. "It doesn't change who I am—"

"But it does!" she interrupted, stepping toward him this time, her hands trembling with frustration. "I look at you, and I don't know who I'm looking at. You're a stranger! Do you know what it's like to watch someone you love turn into someone completely different overnight?"

Beomgyu's expression hardened. "You think you're the only one who's had to adjust? I've had many companions before you. Rose, Clara... they all had to get used to it. They did eventually. But you... you look at me like I'm some monster. Like I've betrayed you just by existing."