by Sunghee Hwang SEOUL, South Korea (AFP) — South Korean supergroup BTS return to the stage in Seoul to play for their adoring home-grown fans for the first time since 2019 on Thursday, after tickets for the three-night stadium concerts sold out in minutes. While Covid-19 emptied arenas and shut clubs worldwide, the K-Pop septet thrived during the pandemic — scoring a string of number one hits, expanding their global fanbase, and reaping record profits. […]