On July 6 episode of E Channel's television show 'Sporty Sisters', Seo Ji-yeon made a guest appearance.

Then, former professional golfer Park Se-ri commented, "Don't you guys know? She's a family of a member of the hottest K-pop group right now."
When asked who that was, Park Se-ri said, "It's RM of BTS. They look really alike, don't they?"

She continued, "We don't see each other often though. We only tend to see each other during holidays when our families gather together."

She also revealed photos of some signed BTS albums that she had received from RM.
Over one of the albums, RM wrote, "To Seo Ji-yeon, how are you doing, Ji-yeon? I hope you stay healthy and happy even after you start high school. I believe in you! From RM."

(SBS Star)