Both Imai and challenger, Mai Ginge Jenses of Denmark, had an opened frame each after the first three frames. The Japanese was quick to recover with a double in the fourth and fifth frames. Jensen responded with a double too in the fifth and sixth frames to level things up.
Imai spared a crucial split in the sixth frame but the Dane failed to spare her seventh frame. With another split in the eighth frame from Jensen, the match was more or less swaying in favour of the Japanese.
Imai went on to win the match, 191-163 and earned Japan's first gold medal of the world championships since 1991 in Singapore. The champion had edged third-seed, Chan Shuk Han of Hong Kong, 213-207 in the first semi-final match to reach the final.
Jensen, who settled for the silver medal, dispatched topseed, Hong Haeni of Korea, 207-198 in the other semi-finals to face the Japanese in the final. Both Hong and Chan took home a bronze medal each as losing semi-finalists.