WAG is a Japanese group formed in 1998 and associated with Giza Studio. Its documented lineup includes 平山進也, 平山裕司, and 柳田圭祐, placing the act firmly within the late-1990s Giza Studio era of Japanese music.
The group is easiest to identify through those stable details: Japanese origin, a 1998 formation date, a three-member lineup, and an official website hosted under the Giza label domain. That combination makes WAG a distinct entry in Japanese music documentation and helps separate it from other artists or projects that share the same name.
