South Korea’s capital has turned into the epicentre of global pop culture as K-pop powerhouse BTS makes its long-awaited return to the stage, drawing hundreds of thousands of fans and millions more online for a landmark reunion concert.

The seven-member group, widely regarded as the world’s biggest boy band, officially reunites Saturday for their first live performance in nearly four years following a hiatus in 2022 for mandatory military service. The comeback event is expected to attract about 260,000 attendees in central Seoul, with a global audience tuning in via livestream.

Set against the backdrop of the historic Gyeongbokgung Palace, the concert blends modern K-pop spectacle with national heritage. The venue, often associated with Korea’s royal past and resilience, underscores the group’s symbolic status as cultural ambassadors.

Fans — collectively known as ARMY — began gathering early in the day, filling downtown streets under tight security. Entry procedures started hours ahead of the 8:00 pm showtime, while music and pre-show activity built anticipation throughout the afternoon.

The performance also marks the live debut of BTS’s new album, “ARIRANG,” released a day earlier. Named after a traditional Korean folk song, the album reflects a deeper exploration of Korean identity and artistic maturity. It reportedly sold nearly four million copies within its first 24 hours, with millions of pre-saves on streaming platforms highlighting intense global demand.

However, the concert faced a last-minute complication as group leader RM sustained an ankle injury during rehearsals. While still participating, his stage movements are expected to be limited.

Saturday’s show also serves as a launchpad for an ambitious 82-date world tour that could rival the масштаб and economic impact of The Eras Tour by Taylor Swift.

Security across central Seoul has been extensive, with thousands of police officers and staff deployed, road closures enforced, and nearby facilities temporarily shut. While authorities cite public safety, the scale of the operation has sparked criticism, including concerns over workforce strain and mandatory participation by public employees.

Beyond the spectacle, BTS’s return carries broader cultural resonance. Known for advocating social causes — from partnerships with UNICEF to support for racial equality movements — the group has built a reputation for messages centred on resilience, identity and personal growth.

As the night unfolds in Seoul, the reunion is being seen not just as a concert, but as a defining moment in contemporary pop culture — one that signals both a new chapter for BTS and a renewed connection with a global fanbase.