방탄소년단 정국 생일 기념 한국→일본·헝가리까지 전 세계 곳곳 생일 카페·전시회..생일 축하도 '월클' - starnewskorea.com

In its August 28, 2026 report, Star News said BTS member Jungkook’s fans organized birthday cafes, exhibitions and billboard ads across Seoul and Busan as well as overseas in Japan (over 15 locations), Indonesia, Taiwan, Hungary and Bangkok for his September 1 birthday. The article states outdoor billboard ads were scheduled to run August 26–September 1, 2026 at sites including Yongsan I’Park Mall, Hongdae outdoor screens and multiple subway stations, and some cafe events were set for August 28–September 4, 2026 (dates vary by venue).