New Japan Pro-Wrestling
The promotion was founded by Antonio Inoki in 1972 after his departure from the Japan Pro Wrestling Alliance promotion. The first NJPW event took place on March 6, 1972, in Tokyo. Inoki would serve as the president of the promotion until 1989, when he stepped down to pursue a political career as a member of the Japanese House of Councillors. The promotion was a member of the National Wrestling Alliance (NWA) from 1975 to 1985 and once more from 1992 to 1993. NJPW was briefly reaffiliated with the NWA in the late 2000s to the early 2010s as well.
Japan Pro-Wrestling
In August 1984, Riki Choshu had formed Ishin Gundan with Animal Hamaguchi, Isamu Teranishi, Yoshiaki Yatsu, Masa Saito and Kuniaki Kobayashi to feud with Antonio Inoki and New Japan Pro Wrestling. However, just as the feud was heating up, tensions both in and out of the ring forced Ishingun and a few others to leave NJPW that September. The next month, they formed Japan Pro-Wrestling and also announced a co-promotion with All Japan Pro Wrestling. Masa Saito briefly went back to North America but returned to Japan in 1985 and joined in the new promotion.