BTS will open a special pop-up store in Seoul to mark the release of its upcoming album, “Arirang,” the group’s agency said Tuesday. According to Big Hit Music, the pop-up event will run from 1 p.m. on the day of the album’s release (March 20) through 8:30 p.m. on April 12 at two locations: Shinsegae Department Store’s The Heritage building in Jung-gu, central Seoul, and the Hybe headquarters in Yongsan. Merchandise for sale at the pop-up was created in collaboration with the National Museum Fou