Seoul hasn’t seen anything quite like this in a long time. By the time BTS takes the stage at Gwanghwamun Square on Saturday, with the storied Gyeongbokgung as a backdrop and an estimated 260,000 fans packed into a stretch of road that normally handles morning commuters, the city will have already spent a week purple. […]... Keep on reading: From 'Burn the Stage' to 'The Return,' BTS cinematic universe comes full circle