SECRET's member Hyosung supported member Song Jieun's solo album.

On October 17, Hyosung posted on her Twitter, "Songji is beautiful age 25 and I am technically still 25. Came to support & represent our group! Fighting!" along with a picture.

In the picture, Hyosung is holding Song Jieun's album in her hand and next to her is Jieun, making a V sign at the camera.

Internet users who saw this commented, "Both of them are so pretty," "SECRET members are so cute together," and "The song '25' is so good."

Song Jieun made her comeback stage on October 16 with her new song "Twenty-Five".