The idol seemed a bit sick but managed to pull through until the end. She ended the performance with the cute flower stand pose and tried to break a smile. 

However, she started coughing badly when the music cut off. Fellow members are seen asking, "Are you okay?" Yeonwoo responds with a frown, "Bugs."

She ultimately runs off stage with a bad cough. 

Meanwhile, fans are applauding Yeonwoo's professionalism and performing until the very end with a bug in her system.