In the context, "adult entertainment" is "sex for a price".
Boy-wonder, who was selected as one of the "Young Global Leaders" at Davos World Economic Forum, a confab of the rich and the powerful in the world, was visiting Okinawa.
Commander of the US Marine Corps Air Station Futenma, Colonel James Flynn, froze, according to Sankei Shinbun article.
Sankei Shinbun (5/13/2013; part):
"Use more adult entertainment establishments", says Hashimoto, Okinawa Commander froze
Toru Hashimoto, mayor of Osaka City and co-president of Japan Restoration Party disclosed on May 13 evening that when he visited the US Marine Corps Air Station Futenma (Ginowan City, Okinawa) and met with the commander, he urged "more use of Japanese adult entertainment" by the US military. According to Hashimoto, he told the commander, "Unless you make good use of the adult entertainment industry, you can't control sexual energy of tough Marines." The commander ignored his suggestion, saying "it is prohibited in the US military".
Mr. Hashimoto visited the Futenma Air Station on May 1. On that occasion, he told the commander of the Station that "there are places in Japan that [the Marines] can legally release their sexual energy", and urged that the commander order the Marines to make use of adult entertainment establishments. According to Mr. Hashimoto, the commander froze, and cut off the talk by saying "The US military bans the use [of such establishments]. Let's not talk about this any more."
Boy-wonder's comment is no surprise, as he's been saying "comfort women" are absolutely necessary.
It is absolutely no surprise for the country of Japan either. After all, the country readied what was to become "Recreation and Amusement Association" in three days after the Emperor declared the end of World War II on August 15, 1945 - almost the very first thing that the defeated government did. Heroic girls and women to serve as "breakwater", and preserve the virginity of the rest of Japanese girls and women.
What a country.