How it was won
Tomokazu and Miwa Harimoto, brother and sister, won both titles at Japan's home Champions event.
Miwa, the top seed, beat Chen Xingtong 4-2 in the final, 13-11, 11-7, 9-11, 11-9, 1-11, 11-7, after a 4-2 win over Wang Yidi in the semi-finals.
Tomokazu, the third seed, beat the top seed and his teammate Sora Matsushima 4-2 in the semi-finals. In the final he beat South Korea's Oh Junsung 4-1. Oh, unseeded, had beaten Hiroto Shinozuka 4-1 in the other semi-final. Lim Jonghoon knocked out the fourth seed, Lin Yun-Ju, in the first round.