Solo debut single from Ryosuke Yamada (Hey! Say! JUMP) features a theme for TV special "Kindaichi Shonen no Jikenbo Hong Kong Kowloon Zaiho Satsujin Jiken." Regular edition includes a new song "Gin no Sekai ni Negai wo Komete" written by Yamada and a cover of "Ai no Katamari (KinKi Kids)." Cover artworks corresponding to two limited editions and regular edition are different from each other.