FTISLAND brings the 17th single. The title song is written and composed by Lee Hong-gi. This edition includes a bonus DVD with a music video for the title song and making-of as well as five live tracks taken from their concert held on June 1st, 2017 at Nippon Budokan: "Shadows," "Champagne," "A light in the forest," "1234," and "REASON." Comes with a trading card randomly selected from six kinds and an application code (2) (valid only in Japan).