The MAMAMOO fan expressed they were going through a hard time and were slowly losing the will to live. Seeing the message written to her, Moon Byul responded:
"The day you were born, everyone was happy and smiled. That's how much of an important person who gives happiness you are. If you were to disappear, everyone else will disappear into sadness. Also, you're an awesome person, so you can live an awesome life in the future as well. There will be tough times when you'll be sad, but it's because there are sad times that you can feel an even greater happiness. Be strong! Live an awesome life for yourself! There's nothing I can do for you, but... Let's live with good thoughts about how life is precious and think back on good memories. Moon Star!
Solar - Person Who Gives Happiness."
How sweet! Check out Moon Byul's song recommendation here.