Similarly, their performance of “Fire” featured even more pyro. They flexed their choreography skills on the “Mic Drop” remix (but didn’t drop their mics at the end.) And they kept moving in the round for “Run,” so that all of the 40,000 people gathered for the first night could see one of them at a time.

It was 21 March and, after a long break, J-Hope, RM, Suga, Jin, Jimin, V and Jungkook had taken to the stage again - silhouettes against an arch of LED screens framing the historic gate to the royal palace in Seoul, as screaming crowds stretched for blocks.

BTS will stage its long-awaited comeback concert on Saturday night at Seoul’s Gwanghwamun Square. The square is one of South Korea’s most famous landmarks, representing its royal heritage as well as its political and cultural life.

The return of the world's biggest boy band BTS looks set to be a major money-spinner — we take a deep dive into BTSnomics to find out more.