Single of STRAIGHTENER features an intro theme of TV series "Yusha Yoshihiko Chapter 2 (Title subject to change)" and more for 3 tracks total. Comes with a bonus DVD with the final day of their "SOFT ACOUSTIC TOUR" at Shibuya Kokaido on July 14, 2012 (over 60 min.). *The DVD disc is encoded for region 2 (Japan, Europe, and Middle East), and no subtitles are included.