On June 29 KST, U-KISS appeared as guests on the SBS power FM radio 'Cultwo Show', delivering news of their 15th anniversary comeback.

On this day, Soohyun explained how out of 10 members who have spent time as a part of U-KISS, 6 ultimately came together for the 15th anniversary album. Soohyun said, "Hoon, Kiseop, and I are the ones signed with a company as U-KISS, and we have been doing mostly solo activities. But for me,  I've always had lingering feelings for U-KISS and wanted the group to be more successful. I wanted to make the 15th anniversary meaningful, with a good song. The company took this into consideration, and we were able to contact the other members."

He continued, "Eli was the one I was most worried about, since he is busy with his restaurant in the U.S. Siyoon (AJ) is at a finance company, and it's been 12 years since Alexander left the group, so I thought that maybe he wouldn't be fond with the idea of a reunion, but when I contacted everyone, they all responded positively."

AJ then added on, "I was working as a research assistant for financial analysts," and the DJs were surprised to hear that AJ studied psychology at Columbia University. However, he commented, "Please don't ask me to guess what you are thinking. That is not psychology, that is mind reading," causing laughter. 

Meanwhile, U-KISS returned with their title track "The Wonderful Escape" from their 15th anniversary album 'Play List' on June 28.