Girl group GFRIEND will hold its first online concert on October 31. On October 20, GFRIEND released a teaser video for "2020 GFRIEND ONLINE CONCERT GFRIEND C:ON" on its official YouTube channel to announce the fact that the concert was held.

The teaser video released on the same day was produced under the concept of a social media platform in line with the format of an online concert. In the video, GFRIEND draws attention by showing a clear and fresh charm along with the fresh atmosphere of a clear autumn day.

Meanwhile, GFRIEND will hold 'G C:ON' on October 31 and make a surprise comeback with its new full-length album '回:Walpurgis Night' on November 9.