Dahyun stood backstage, feeling incredibly dizzy. As one of the members of the popular girl group Twice, she had been continuously touring for months. The constant traveling, sleepless nights, and exhausting performances were starting to take a toll on her health.

But despite feeling sick, Dahyun knew she had a responsibility to her fans. Tonight was the last concert of their tour, and she couldn't bear the thought of disappointing the thousands of people who had come to see them perform. So she mustered up all her strength and put on a brave face, determined to give her best on stage.

As the concert started, Dahyun felt her headache intensify. She wrapped her hands around her temples, trying to alleviate the pain. The lights were blinding, the music was deafening, and she struggled to keep her balance. But she pushed through, not wanting to let her members down.

During the final song, Dahyun's vision blurred and she stumbled, but she managed to catch herself and continued to sing. However, her condition soon worsened. She could feel her body temperature rising, her face turning flushed. It suddenly became hard for her to concentrate, but she was too scared to show her weakness.

The other members noticed Dahyun's odd behavior on stage, but they brushed it off, assuming it was just her usual goofiness. They had always seen her as the unpredictable and energetic one of the group, so they didn't think much of it. Little did they know, Dahyun was fighting a battle of her own, both physically and emotionally.

Deep down, Dahyun was aware of the disappointment she was causing her bandmates. They had always prided themselves on being professionals, and she felt guilty for not living up to that expectation. She didn't want to burden them with her illness, so she decided to keep it a secret.

Feeling increasingly weak, Dahyun couldn't bear it any longer. She made her way backstage and collapsed into Nayeon's arms. But instead of Nayeon showing concern, she was furious. She had seen Dahyun's lackluster performance and assumed she was simply slacking off.

In her anger, Nayeon shook Dahyun, not realizing the true extent of her condition. The dizziness overwhelmed Dahyun, causing her to trip and stumble towards the nearest bathroom. She locked herself in a stall, tears streaming down her face.

Dahyun knew she had reached her limit. She realized that hiding her sickness and pretending to be fine was doing more harm than good. She mustered up the courage to call her manager, hoping that someone would understand and help her through this.

To her surprise, her manager arrived promptly and entered the bathroom stall. Dahyun's heart sank as she expected a scolding for her lack of professionalism. But instead, her manager wore a concerned expression, but she still had to go on stage for their last song. 

With tears in her eyes, Dahyun mustered enough strength to return to the stage. As she sang the last song, she pushed her aching body further, giving it her all. Despite the pain, she managed to complete the performance, pouring her heart and soul into the song.

Midway through the song, Dahyun noticed a small red stain on her dress. Panic coursed through her veins as she realized it was her own blood. In her weakened state, she had pushed herself to the brink, causing her body to react.

As the song came to an end, Dahyun's legs gave away, and she collapsed on the stage. The members rushed towards her, their initial frustration now overridden by concern. They finally realized that there was something seriously wrong with her.

Dahyun was rushed to the hospital, where she received the necessary medical attention. The diagnosis revealed that she had been pushing herself too hard, causing exhaustion and resulting in her collapse.