Debut single from Johnny's next generation group Hey! Say! Jump featuring the largest ever, youngest ever group cast for a Johnny's act! Group includes Yuto Nakajima, Ryosuke Yamada, Yuri Chinen, Ryutaro Morimoto, and Keito Okamoto of last year's Hey! Say! 7 plus Daiki Arioka, Yuya Takaki, Kei Ino, Hikaru Yaotome, and Kota Yabu bringing the average age of the group to 15 and with a total of ten members! Includes the postitive, powerful debut track "Ultra Music Power" (image song to "World Cup Volleyball"). Regular edition includes two songs plus karoke tracks for each song.