RIO DE JANEIRO - 'King Kohei' Uchimura had just won team gold but the Japanese gymnastics star was already plotting the title defense at his home Olympics in Tokyo 2020. The 27-year-old looked more exhausted than elated as he walked off the floor after sealing Japan's first Olympic team gold since 2004, and completing his own vast collection of titles. Japan finally took gold after winning silver in 2008 and 2012 behind China. But the athlete known for his iron discipline and robotic control which has already given Olympic all-around gold and 19 world medals -- including 10 in gold -- has more in the tank. His all-around title defence takes place on Wednesday and floor final are yet to come in Rio where he could increase his Olympic medals tally to eight. And there is also Tokyo 2020 to think about. "The next Olympics is in 2020 in Tokyo so I firmly believe that we can win again," said the six-time world all-around champion. In addition the athlete from Isahaya also wants to boost gymnastics in his native country. "By winning team gold I hope that people will know not just me and Kenzo (Shirai) but the others too," he said of teammates Koji Yamamuro, Yuzuke Tanaka and Ryohei Kato.