Nippon 2007, the 65th Worldcon and first in Japan, was held August 30–September 3, 2007, at the Pacifico Yokohama. GoHs: Sakyo Komatsu, David Brin, Yoshitaka Amano, and Michael Whelan. FGoH: Takumi Shibano. Chair: Hiroaki Inoue.
3,348 members attended out of a total 5,149.
Nippon 2007 initially reported a loss of about $40,000, but in December 2011, at the 2011 Smofcon, it increased the estimate to at least $70,000 while announcing a new bid for 2017. In August, 2012 at Chicon 7 it announced that the remaining loss was around $84,000 after having received around $30,000 in donations.
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