K-pop group BTS is on a record-breaking streak. This time, the seven-member boy band has broken the record for the best-selling album in Korea …with their latest album "Map of the Soul: Persona." The album, released this April, has sold three-point-four million copies as of May. It broke the record previously held by Kim Gun-mo's 1995 album "Mis-Encounter," …which sold three-point-three million copies in Korea. The title song of the BTS album "Boy with Luv" also holds records for the most-viewed YouTube video in three categories.