On September 25, Source Music announced Yerin will temporarily halt all activities. The label stated, "During 'SBS Super Concert' on the 24th, Yerin expressed pain in her stomach. She was examined at a hospital and diagnosed with appendicitis. It's not to the point where she needs to undergo surgery, but she will have to have surgery if the condition worsens. As the doctor suggested, she will be taking a break and will not be participating in part of her schedule."

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They continued, "In the events scheduled from September 28 to October 1, G-Friend will be participating as a group of 5 without Yerin. In consideration of Yerin's health, we ask Buddy and everyone for their generous understanding."

Currently, G-Friend is in promotions for their new repackage album 'Rainbow'.  

Get well soon, Yerin.