Deaikei (出会い系) means 'type of encounter' in Japanese.
Deaikei saito (出会い系サイト) refers to online dating websites.
Some kissa have been raided because of anti-prostitution laws.
Gottlieb, Nanette. Japanese cybercultures. London: Routledge, 2003.
Jensen, Nate. (2009) Japanese-English Guide to Sex, Kink and Naughtiness. ISBN 978-1442108769
NISHIMURA, KEISHI. "Police crack down on pay-for-play 'coffee shops'" Asahi Newspaper. 03 Dec. 2008. 26 Apr. 2009 .
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