Daisuke Harada
After a disappointing 2011 Tenno-zan, where Buffalo was eliminated in the first round by American Chikara representative Jigsaw, his 2012 started with him defeating seven other men, including Tigers Mask, in a gauntlet match on February 26, to become the number one contender to new Osaka Pro Wrestling Champion, Daisuke Harada. On March 25, Buffalo defeated Harada to win the Osaka Pro Wrestling Championship for the first time in his thirteenth year in the promotion. Buffalo made his first successful title defense on May 26, defeating Joker member Spider J. On July 22, Buffalo main evented his second "Hurricane" event, in which he lost the Osaka Pro Wrestling Championship back to Daisuke Harada, ending his reign at 119 days. On November 3, Buffalo teamed with Tigers Mask to unsuccessfully challenge Harada's Glare stablemates Hayata and Tadasuke for the Osaka Pro Wrestling Tag Team Championship. On January 19, 2013, Buffalo teamed with fellow Osaka Pro Seikigun members Kazuaki Mihara and Naoki Setoguchi in a six-man tag team main event, where they were defeated by Glare. After the match, Glare leader Daisuke Harada revealed that he had recruited a new member to his stable, someone who agreed with his idea of changing Osaka Pro. He then revealed Black Buffalo as his newest ally, much to the dismay of the Osaka Pro Seikigun, especially Tigers Mask. On January 26, Buffalo, Harada, Hayata and Tadasuke defeated Billyken Kid, Kazuaki Mihara, Naoki Setoguchi and Tigers Mask in an eight-man tag team main event, with Buffalo submitting Tigers Mask for the win. After the match, he challenged the Osaka Pro Seikigun to an elimination match, where the losing team would be forced to disband. After Buffalo and Tigers Mask had eliminated each other from the match on February 24, Harada pinned Billyken Kid for the final elimination, saving Glare and forcing Seikigun to disband. On March 2, Billyken Kid and Kazuaki Mihara joined Glare, announcing they now agreed with the stable's "revolution". Glare then declared war on Joker and Unique Gundan, the two remaining stables in Osaka Pro. The following major Osaka Pro event on March 24 saw former rivals, Tigers Mask and Joker's Orochi, come together to defeat Buffalo and Billyken Kid in a grudge tag team match. The following month, Glare was disbanded, when Daisuke Harada and Hayata quit Osaka Pro. From May 26 to June 23, Buffalo and Billyken Kid took part in the 2013 Osaka Tag Festival, making it to the final day with a chance of winning the tournament, however, a loss against the reigning Osaka Pro Wrestling Tag Team Champions, former Glare stablemates Kazuaki Mihara and Tadasuke, meant that they dropped behind the Big Guns (The Bodyguard and Zeus) in the final standings. On July 18, Buffalo made his debut for the Pro Wrestling Noah promotion in his home prefecture of Tottori, losing to Maybach Taniguchi in a singles match. The following day, he pinned Hitoshi Kumano in a tag team match, where he and Gastón Mateo faced Kumano and Pesadilla. On August 10, Buffalo and nine other wrestlers revived the Osaka Pro Seikigun in order to battle the new Bad Stream stable. The first big battle between the Seikigun and Bad Stream took place on August 25, when Buffalo, The Bodyguard, Naoki Setoguchi and Zeus defeated Kazuaki Mihara, Mikey Broderick, Quiet Storm and Tadasuke in a four-on-four elimination tag team match. On September 15, Buffalo unsuccessfully challenged Bad Stream leader Quiet Storm for the Osaka Pro Wrestling Championship.