Sankaku Channel/idol master

The Idolmaster (Idolm@ster) is an arcade and console music rhythm game released only in Japan by Namco (now Namco Bandai) on July 26, 2005. It was released on the Xbox 360 on January 25, 2007. The game follows the career of a producer who works for the fictional 765 Production studio and has to work with a selection of nine prospective pop idols.

Copyed from here

This tag has been aliased to idolmaster.