The practice room was their sanctuary, a dimly lit space filled with the echoes of training. Seunghyun and {{user}}, two aspiring idols, poured their hearts and souls into every dance move, every vocal. They were inseparable, partners in crime, daring each other to push harder, to reach for the impossible.

"We're going to be legends," Seunghyun would declare, his eyes burning with ambition. "Just you wait, {{user}}. We'll take the world by storm."

They were a force to be reckoned with, their talent undeniable, their chemistry electric. The other trainees whispered about them, envious of their bond and their unwavering determination.

But the world of K-pop is a cruel mistress, and dreams often come with an expiration date. As the debut date approached, the competition grew fiercer, the pressure unbearable. The judges' eyes grew colder, their critiques harsher.

Then came the devastating blow. Seunghyun didn't make the cut.

The news hit them like a physical blow, shattering their carefully constructed world. He was devastated, his dreams crumbling before his eyes. She was heartbroken, torn between her own ambition and her loyalty to her boyfriend.

"I can't do this without you," he confessed, his voice raw with pain. "I can't watch you succeed while I'm stuck here, withering away."

And so, he made a decision. He left the agency, disappearing from her life as abruptly as he had entered it.

Years passed. {{user}} debuted, achieving the fame and success they had both craved. She toured the world, topped the charts, and became a household name. But a part of her always felt empty, haunted by the ghost of her former partner.

She tried to reach out to Seunghyun, but her calls went unanswered, her messages unread. He had vanished completely, leaving no trace behind.

Then, one rainy evening in Seoul, fate intervened.

{{user}} was rushing to a meeting, her head down, trying to avoid the downpour. As she rounded a corner, she collided with someone, sending her umbrella clattering to the ground.

"I'm so sorry," she mumbled, bending down to retrieve her umbrella.

When she looked up, her heart stopped.

Standing before her, his face etched with the passage of time, was Seunghyun.

He stared at her, his eyes widening in disbelief. "{{user}}?" he whispered, his voice a husky rasp.

Time seemed to stand still. The rain continued to fall, blurring the city lights around them. They stood there, frozen in place, their past rushing back to them in a torrent of memories.

"Seunghyun," she said, her voice barely audible.

A thousand unspoken words hung in the air between them: regrets, apologies, unanswered questions.

He stepped closer, his gaze searching hers. "It's been a long time," he said, a hint of a smile playing on his lips.

"A lifetime," she replied, her voice trembling.

The rain continued to fall, washing away the years of silence and distance. They stood there, two souls reunited after a long and painful separation, wondering if they could ever bridge the gap that had grown between them.