Ya-ya-yah! 2003 (Japan) is Japan drama premiere on Jan 5, 2003 on TV Tokyo
The show first aired on January 5th, 2003 featuring mainly the group Ya-Ya-yah and from K.K.Kity (later NEWS), Koyama Keiichiro, Kato Shigeaki and Kusano Hironori. And during the 'LIVE Stage' part it also featured more Johnny's Jr. members.
Later on Masuda Takahisa and Tegoshi Yuya also became main personalities of the show together with some members from J.J. Express. And Koyama Keiichiro became the main host of the show.
Other top Johnny's Jrs. would sometimes come as guest, such as Takizawa Hideaki, Kanjnai8 and KAT-TUN. Later on even non Johnny's came as guest to participate in the show.
With the sudden debut of Ya-Ya-yah member, Yabu Kota and Yaotome Hikaru, as part of Hey! Say! JUMP in 2007, this show aired its last episode on October 27th. The show was then replaced by Hi! Hey! Say! featuring only Yabu Kota and Yaotome Hikaru with Koyama Keiichiro as host.