Daisuke Harada
Tadasuke made his professional wrestling debut on April 29, 2007, losing to Tsubasa at Osaka Pro Wrestling's eighth anniversary event. As is typical for a rookie in Japanese professional wrestling, Tadasuke's first year in the business consisted solely of losses. The losing streak finally ended on March 22, 2008, when Tadasuke pinned Robert Tanaka, with whom he had developed a storyline rivalry during the past year. Later in the event, Tadasuke confronted Daisuke Harada and Zeus, who eventually accepted him as the third member of their new Blood &amp; Guts stable. During the next few months, Tadasuke started picking up wins more regularly during Blood &amp; Guts' rivalry with the Bad Force stable, though he was still seen as the lowest ranking member of his stable. On June 21, Tadasuke entered the 2008 Osaka Tag Festival, teaming with fellow Blood &amp; Guts member Atsushi Kotoge. Tadasuke and Kotoge eventually made it to the finals of the tournament on June 29, where they were defeated by their stablemates Daisuke Harada and Zeus. Following the dissolution of Bad Force, Blood &amp; Guts found new rivals in the Legion of Violence (LOV) stable. On March 14, 2009, Tadasuke, Harada and Kotoge entered a series to determine, which of the three would get to challenge for the Independent World Junior Heavyweight Championship. After each of the three finished the series with one win and one loss, a deciding three-way match was set for April 4, where Harada was victorious. In late 2008, Tadasuke had started to exhibit villainous behaviour, which eventually led to him turning on Blood &amp; Guts on June 6, 2009, and jumping to Legion of Violence. During the next months, Tadasuke finally made his breakthrough by starting a rivalry with Billyken Kid, which eventually culminated in a "Lucha de Apuestas" Mask vs. Hair match on August 23, where Tadasuke was defeated and, as a result, shaved bald. On April 3, 2010, Tadasuke entered a round-robin tournament to determine the number one contender to the Osaka Pro Wrestling Championship. After picking up early wins over former stablemates Daisuke Harada and Atsushi Kotoge, Tadasuke suffered a loss against Kazuaki Mihara, and was as a result placed in a tiebreaker match on April 17, where Daisuke Harada was victorious and won the tournament.