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”.

After a four-year break, K-pop supergroup BTS returned Saturday with a massive, free comeback concert in Seoul, where thousands of police locked down a central boulevard for the Netflix-exclusive spec...

South Korean megastars BTS performed their first show in nearly four years on Saturday in front of enormous crowds in Seoul for a K-pop extravaganza livestreamed to millions more worldwide