It showcases BTS’ large free present at Busan’s World Expo in October, which welcomed greater than 50,000 in-person visitors.It showcases BTS’ large free present at Busan’s World Expo in October, which welcomed greater than 50,000 in-person visitors.It showcases BTS’ large free present at Busan’s World Expo in October, which welcomed greater than 50,000 in-person visitors.