Boy band Xdinary Heroes is set to return with its eighth EP, “Dead And,” continuing its streak of genre-blending releases while expanding its narrative of what it means to be a “hero.” Ahead of the album’s release on Friday, the group sat down for a round interview on Wednesday at a cafe in Seongdong-gu, eastern Seoul. “Since this marks our first release of the year, we feel especially excited,” said leader and drummer Gunil. “There are a lot of songs in this album that we really love, and track