The K-pop superstar will have to limit movement during Saturday's global livestream from Seoul, which marks BTS' first full-group performance in nearly four years and a major test of Netflix's live ambitions.

Netflix Inc. has turned the heart of Seoul into a global stage as K-pop megastars BTS returned to the stage with a livestream comeback show that was expected to draw millions of viewers worldwide as part of a new drive by the US entertainment powerhouse to show live events that can “pull people together”.