K-pop supergroup BTS made a highly anticipated return on Saturday with a large-scale free comeback concert in Seoul, marking their first group performance in four years.

The event, held at Gwanghwamun Square, drew tens of thousands of fans, prompting authorities to impose strict security measures, including closing major roads and deploying a heavy police presence. The concert was also streamed exclusively on Netflix.

Opening the show, group leader RM greeted fans and kicked off the performance, sparking loud cheers from the crowd. All seven members—RM, Jin, Suga, J-Hope, Jimin, V and Jung Kook—recently completed their mandatory military service and reunited for the comeback.

The concert followed the release of their fifth studio album, ARIRANG, which reportedly sold nearly 4 million copies within its first day. The performance also marked the beginning of an extensive global tour across the United States, Europe and Asia.

Fans from around the world gathered in large numbers, with thousands securing designated viewing spots while others watched from nearby screens. The atmosphere was energetic, with fans singing along and waving light sticks throughout the show.

Authorities enforced tight crowd control measures, shutting down nearby transport services and restricting access to surrounding areas to ensure safety during the high-profile event.

The comeback comes at a time when global interest in K-pop continues to rise, and analysts say the group’s return could have a major impact on the international music scene.