高木三四郎
On December 28, 2005 Ichimiya retired from professional wrestling and announced his departure from DDT. This led to Sanshiro Takagi taking over the promotion as the new president. Then the company focused on the feud between the face stable Italian Four Horsemen and the heel stable Disaster-Box. In November 2006, DDT announced the creation of their fourth active title the DDT Extreme Championship. Later in 2007 DDT announced a working relationship with Dragon Gate. DDT and Dragon Gate held their first co-promoted show, Dramatic Dream Gate on April 18, 2007 in Shinjuku Face in Tokyo, Japan. DDT would later become a member of the Global Professional Wrestling Alliance. The group was established as a means to aid the many competing wrestling promotions in Japan. In 2009, DDT announced that they were going to become a stock company, turning their company from private to public. In March 2010, DDT announced a working relationship with Big Japan Pro Wrestling. Later in March, Takagi announced the DDT48 (later renamed Dramatic Sousenkyo), which is a fan vote where the winner receives a shot for the KO-D Openweight Championship. Later that month Michael Nakazawa stepped down as the CEO of DDT and Amon Tsurumi became the general manager of the promotion. In 2011 DDT received the Fighting TV Samurai Indie's Job prize for having the best show the year, winning the Best Box Office Award.