Images of BTS members Jimin and Jung Kook wrap the turnstiles and pillars of Sports Complex Station on Busan Metro Line 3, the nearest stop to Busan Asiad Main Stadium, ahead of the group's concerts in the city, June 5. Yonhap

BUSAN — The large LED screen on the outer wall of the Grand Josun Busan hotel has been playing the music video of "SWIM," the title track of BTS' latest album, every 30 minutes since last Friday.

Standing in front of it, fans from all around the globe were glued to the display, with phones raised and the Haeundae seafront glistening in front of them. It was a scene that would have been unimaginable years ago — but then, a lot has changed since BTS last performed in Busan.

The group returns to Busan Asiad Main Stadium Friday and Saturday for two concerts as part of its "ARIRANG" world tour. Scheduled to span 34 cities and 85 dates, the tour is BTS' first as a group after the members' return from mandatory military service, a nearly four-year absence that only seemed to sharpen the appetite of the fandom.

The June 13 show also will fall on the group's 13th debut anniversary, adding a layer of meaning that has not been lost on organizers. That performance will be broadcast live in cinemas worldwide.