In 1998, WAR cancelled contracts to the roster and began running less and less cards due to Tenryu's comeback in New Japan, and in July 2000, it promoted a farewell show that served as the prelude to Tenryu's return to All Japan Pro Wrestling (a lot of the wrestlers from WAR also joined AJPW to fill the void by those who joined Mitsuharu Misawa in forming Pro Wrestling Noah). The WAR name was kept for the use of a stable led by Tenryu during a brief angle in All Japan in 2001.
On July 27, 2006, WAR staged a reunion show at Tokyo Korakuen Hall. The show was supported by various Japanese wrestling promotions including New Japan, All Japan Pro Wrestling and Dragon Gate. This was also the final card promoted by WAR.
Defeated Nobutaka Araya in a tournament final to become the first champion.
Title was abandoned when WAR closed (may have been abandoned earlier when Tenryu won IWGP Heavyweight Championship (won on December 10, 1999). The company held their official final event on July 27, 2006.