Toru Owashi
After Buffalo and Tsubasa failed to regain the title from Liger and Murahama on August 13, Buffalo turned on Tsubasa on November 15 and jumped to Big Boss MA-G-MA's Kishiwada Gurentai stable. Buffalo and Tsubasa had their big grudge match against each other on May 29, 2004, ending with Buffalo picking up the win. On December 19, Buffalo and Daio Quallt defeated Billyken Kid and Tigers Mask to win the Osaka Pro Wrestling Tag Team Championship. Their reign would last until February 13, 2005, when they were defeated by Billyken Kid and Perro. On April 29, Buffalo and Tsubasa reformed Infinity for one night, when they defeated Kageki Pro representatives Aztec and Kaze in a special interpromotional tag team match. After the Kishiwasa Gurentai was disbanded in the aftermath of Big Boss MA-G-MA leaving Osaka Pro, Buffalo, Hideyoshi, Masamune and Toru Owashi formed the promotion's new top villainous alliance, Buraikan, on June 25. In November, Buffalo made it to the semifinals of the Tenno-zan for the third time, but was there once again defeated by Super Delfin. On January 28, 2006, longtime babyface Billyken Kid shocked Osaka Pro by turning on Tigers Mask and the Osaka Pro Seikigun ("regular army") and taking over Buraikan, which was then renamed Vendaval, with Buffalo becoming his second-in-command. On February 26, Buffalo and BKK defeated Flash Moon and Tigers Mask to win the Osaka Pro Wrestling Tag Team Championship. The two teams faced each other in a rematch on June 3 in the finals of the 2006 Tag Festival, which was won by Flash Moon and Tigers Mask. On July 15, Buffalo added another title to his résumé, when he defeated ten other men to win the Osaka Pro Wrestling Battle Royal Championship. However, on July 29, Osaka Pro announced that Buffalo had suffered a rotator cuff tear in his right shoulder and stripped him of both the Osaka Pro Wrestling Tag Team and the Osaka Pro Wrestling Battle Royal Championship.