In order to raise funds for the prevention of AIDS, a group of Japanese porn stars allowed their breasts to be fondled at a charity event called “Boob Aid” on August 30 and 31 in Tokyo. The women raised tens of thousands of dollars by raising their shirts and having their breasts touched for 1,000 yen (roughly $10) or more.

The event was part of a 24-hours “Stop AIDS!” campaign in Tokyo that was streamed live on a Japanese adult cable channel and backed by the Japan Foundation for AIDS Prevention. It was launched in 2003 and is now on its 12^th year of raising funds for AIDS prevention.

The Japanese women all wore identical yellow shirts, which they rolled up as people lined up to touch the revealed breasts. The porn queens flashed big smiles and were evidently happy to support an important cause. “It’s for charity. Squeeze them, donate money — let’s be happy,” said 21-year-old Iku Sakuragi.

You won’t believe what these Japanese porn stars are letting men do in awareness for AIDS http://t.co/po0SRuYSee pic.twitter.com/wpO3rDvyN0

— STOMP (@stompsingapore) September 1, 2014

Fans who wanted to take part in the charity event were required to use hand sanitizer before touching the porn actresses’ breasts. As of Sunday evening, almost 6,000 pairs of hands had participated over a period of 15 hours, and about $50,000 was raised for the charity one hour before closing.

Japan’s porn queens raise thousands of dollars for Aids prevention at ‘Boob Aid’ charity event http://t.co/po0SRuYSee pic.twitter.com/NiP6OTYL67

— STOMP (@stompsingapore) September 1, 2014

One fan was seen putting his hands together in prayer before and after touching breasts. There were also some women seen lining up for Boob Aid, causing one of the porn queens to remark, “Wow, I’m happy. I want her to touch my breasts!”

Before the event, porn queen Rina Serina was optimistic about Boob Aids’ success. “I’m really looking forward to lots of people fondling my boobs. But I would be very happy if you would please be delicate,” she told Tokyo Sports. “I never thought my boobs could contribute to society.”