Prime Minister Junichiro Koizumi said Wednesday he would support a woman's ascension to Japan's Imperial Throne, throwing his weight behind a proposal within the ruling Liberal Democratic Party to revise the current Imperial House Law.

"Personally, I think a female 'emperor' is fine," Koizumi told reporters at his official residence.

"I haven't heard how the discussion on the issue will be handled. But I would like people to have thorough discussions as it will be a big issue in the future," he added.