"Ya-Ya-yah is a Johnny's Jr. group from Johnny & Associates, which also produced groups such as KAT-TUN, SMAP, TOKIO, KinKi Kids, Arashi, NEWS and Tackey & Tsubasa. On May 15, 2002, the group released double A-side single \"Y\u016Bki 100%/Sekai ga Hitotsu ni Narumade.\" The single debuted at #9 on the Oricon charts. On September 24, 2007, members Kota Yabu and Hikaru Yaotome debuted under Hey! Say! JUMP."@en .