BTS was wrapping up their world tour with a grand finale in Seoul. The excitement in the air was palpable as fans gathered in the concert hall, eagerly anticipating the performance. Park Bo-Gum, the band's manager, was backstage making sure everything was in order. Y/N, a 22-year-old police trainee, was part of the security detail for the event.

As the concert began, BTS took the stage to a thunderous applause. Y/N watched from the sidelines, admiring their energy and talent. She had always been a fan, but seeing them up close was a different experience altogether.

Y/N's thoughts were interrupted by the vibrations of her radio. "Security team, be advised, we have reports of aggressive behavior outside the venue. Stand by for further instructions."

Frowning, Y/N glanced around, trying to spot any signs of trouble. The crowd inside was blissfully unaware, cheering and singing along with BTS. She made her way through the backstage area, approaching Park Bo-Gum.

"Sir," she began, "we've got some reports of disturbances outside. Should we increase security around the exits?"

Park Bo-Gum's eyes narrowed. "Keep an eye on it. If anything seems out of the ordinary, let me know immediately."

Y/N nodded and moved to the side entrance, scanning the area. The music and cheers from the concert were almost deafening, but Y/N's senses were on high alert. Suddenly, her earpiece crackled again.

"We have a situation outside the venue. Multiple reports of aggressive behavior and attacks. It's escalating quickly."

Her heart pounded as she rushed back to Park Bo-Gum. "Sir, it sounds serious. We need to be prepared to evacuate the band and the audience."

Park Bo-Gum didn't hesitate. He grabbed his radio and issued an order. "All units, initiate emergency protocols. BTS, cut the performance short. We need to get everyone out safely."

Confused but compliant, BTS followed his lead. As they finished their song, Jin addressed the audience. "Everyone, please remain calm. We need to take a short break. Please follow the instructions of the security team."

The crowd murmured in confusion, but there was a general sense of cooperation. Y/N and the other security members began guiding people towards the exits. Suddenly, a loud crash echoed through the venue, followed by terrified screams.

"What's happening?" Jimin shouted over the noise, looking towards Y/N.

Before she could respond, the emergency lights flickered on, casting an eerie glow over the concert hall. A figure stumbled into the hall, covered in blood and emitting guttural growls. The first zombie had breached their defenses.

"Get back!" Y/N yelled, drawing her baton. "Everyone, stay behind me!"

The zombie lunged towards the stage, its eyes wild with hunger. Y/N swung her baton, hitting it squarely in the head, but it barely staggered.

Jungkook grabbed a nearby mic stand, ready to defend himself and his bandmates. "What the hell is that?"

Y/N didn't have time to answer. More zombies poured into the venue, their movements jerky and unpredictable. The crowd's screams reached a fever pitch as panic spread.

"We need to get out of here, now!" Y/N shouted, pushing the band members towards the backstage exit. Park Bo-Gum was already ahead, clearing a path for them.

"Go, go, go!" he urged, ushering them through a narrow hallway. The sounds of chaos and destruction followed them, growing louder with each passing second.

As they reached a side exit, Y/N slammed the door shut behind them. "This way! There's a service tunnel that leads outside."

They hurried through the dimly lit tunnel, the sounds of their footsteps echoing ominously. Y/N glanced back, her heart racing. The zombies were relentless, and she knew they wouldn't stop until they had devoured everything in their path.

Emerging into the cool night air, the group paused to catch their breath. The city was in turmoil, with fires burning and distant screams echoing through the streets.

"What do we do now?" RM asked, his voice trembling slightly.

"We need to find a secure location and figure out what's going on," Park Bo-Gum replied. "Y/N, any ideas?"

Y/N took a deep breath, trying to steady her nerves. "There's an old warehouse nearby. It should be sturdy enough to hold off the zombies for now."

"Lead the way," Jin said, determination in his eyes.

They moved quickly, sticking close together. The journey to the warehouse was harrowing, with zombies appearing around every corner. Each encounter tested their resolve, but Y/N's training and the group's teamwork kept them alive.

As they reached the warehouse, Y/N forced the door open, and they quickly barricaded it behind them. For now, they were safe, but they all knew this was just the beginning.

As they caught their breath, a loud thud came from above them, followed by the sound of shuffling feet. They weren't alone in the warehouse.

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