Includes a 72-page booklet, two photocards and one folded poster. O!RUL8, 2? is the first mini-album by South Korean boy band BTS. It was released on September 11, 2013 as the follow-up extended play after 2 Cool 4 Skool. The album consists of ten tracks, with “N.O” as the lead single. BTS, also known as the Bangtan Boys, is a seven-member South Korean boy band formed by Big Hit Entertainment. The name subsequently became a backronym for Beyond the Scene in July 2017.