Osaka Mayor Toru Hashimoto has expressed support for NHK Chairman Katsuto Momii, who's under fire for asserting at a recent press conference that the wartime enslavement of women to provide sex for Japanese soldiers was wrong only by today's standards.

The "comfort women" system, as it is commonly referred to, existed in every country, the co-leader of Nippon Ishin no Kai (Japan Restoration Party) said.

"It's not a problem that the head (of NHK) made such a comment. All countries did similar things and have unfortunate histories regarding war and sex. (Momii's argument) is sound, and something I've been saying for a long time," Hashimoto told reporters Monday afternoon.