K-wave: How fans are supporting their favourite idols
If you walk through Piccadilly Circus station, you might just see the seven members of K-pop band BTS smiling at you on one of the station's billboards.
Fans of the group (often referred to as ARMY) pooled their resources to purchase £2,000 worth of advertising space in order to commemorate the eighth anniversary of the group's debut.
"They're a way for UK ARMY to celebrate with BTS," Lorraine, a representative of the BTS UK ARMY Unite group told the BBC.