On April 16th, Brian guested on KBS 2FM's "Super Junior's Kiss the Radio" and chose Girl's Day's Hyeri as his most favorite girl group member. Fellow guest Seo In Kook made a surprise reveal that Brian likes girl groups, to which Brian agreed. When asked by Seo In Kook who he would choose if he had to only pick one member out of all of the girl groups, Brian retorted, "If I only choose one, the other girl group members will be upset." Although he hesitated at first, he finally added, "Girl's Day's Hyeri." When asked why, he replied, "I recently recorded for something with her. I had had a rough day and she came up to me and said, 'I was always your fan, senior. My favorite out of all of the singers.' It picked up my mood and made me wonder how nice it would be if she was my little sister." Seo In Kook stated, "Let me give a tip to girl groups. Brian likes compliments!" Source: Seoul NTN via Nate