Ya-ya-yah
Ya-Ya-yah is a Johnny's Jr. group from Johnny & Associates. On May 15, 2002, the group released double A-side single "Yūki 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.