TOKYO  - Japanese political kingmaker Ichiro Ozawa on Wednesday launched a new party along with some 50 ruling party defectors, vowing to fight a plan to double the nation's sales tax. Ozawa, known as the "Shadow Shogun", also promised to battle Prime Minister Yoshihiko Noda's unpopular move to restart two nuclear reactors, and instead focus on "developing new energy sources in place of nuclear power plants". Ozawa and his supporters quit the Democratic Party of Japan (DPJ) last week, storming out of parliament in protest at the sales tax hike in a dramatic move that shook up Japan's normally staid political scene.Seventy-year-old Ozawa, a major powerbroker who was a driving force behind the DPJ's rise to power in the 2009 general election, named the new party "Kokumin no Seikatsu ga Daiichi", which translates as People's Lives First.The DPJ, a loose alliance of conservative, centrist and liberal politicians, had promised to put more emphasis on the lives of regular people and wrestle national politics from the control of powerful bureaucrats.