On May 11, 2017, Pledis Entertainment released a video teaser on Seventeen's Instagram page in preparation for Al1.[1] The video features member Vernon wandering around a deserted road with a compass in his hand. Over the next five days, twelve similar trailers, one for each member, were released on Seventeen's social media accounts. On May 16, 2017, they revealed the concept photos and track list of the mini-album on their Twitter and Instagram pages.[2][3][4] In addition, they released the highlight medley and details of the album packaging, which consisted of a photobook, two posters, a photocard, a postcard, and a sticker.[5][6] On May 20, 2017, Seventeen released the first teaser for the title track, "Don't Wanna Cry", on their YouTube channel.[7]
After a month of its release, Al1 sold over 250,000 copies and topped both the weekly Gaon Album Chart for the chart issued on May 27, 2017, and the monthly chart recorded for May.[8][9] The album also debuted and peaked at number two on the World Albums chart for the week ending on May 25, having sold 2,000 units in the United States.[10]