One of Japan's most popular comedians denied sexual assault allegations published in a prominent magazine on Wednesday, his talent agency said, adding it was considering legal action.

There are "no facts whatsoever" in accusations published by weekly Shukan Bunshun against comedian and TV presenter Hitoshi Matsumoto, his talent agency said in a statement.

The Bunshun report quoted two women as alleging Matsumoto, 60, forced them into sexual activities at private parties at an upscale Tokyo hotel in 2015.

Among the claims, one woman alleged forced oral sex and the other said she was forcibly kissed.

The article "seriously degrades the social reputation of (Matsumoto)," Yoshimoto Kogyo, the agency, said.

The firm will "lodge a resolute protest" against Bunshun, including over the way it "persistently questioned and filmed" the comedian in the lead-up to the report's publication.

"We're considering legal action," the statement said.

Yoshimoto Kogyo's public relations office declined to comment any further when contacted.

Matsumoto is half of the comedy duo known as Downtown, a household name in Japan.

Bunshun was one of the first publications to report, as long ago as 1999, on a sex abuse scandal involving Johnny & Associates that rocked Japan's entertainment industry earlier this year.

The agency admitted in September its late founder had sexually abused young recruits over decades, leading to an organizational shake-up.

The global #MeToo movement was slow to pick up in Japan, where many victims are said to be too scared to come forward, although a handful of high-profile cases recently forced a reckoning.