DEMPA GUMI.inc brings two titles simultaneously. This item is a CD including a song written and arranged by a jazz pianist, H ZETT M. Lyrics are written by a manga artist, Inio Asano same as "Ashita Chikyu ga Konagona ni Nattemo." Also includes the one written by Hyadain and "Saihakkenden," which is an outro theme song of anime series "The Disastrous Life of Saiki K."