This is How Japan Promotes its *Ahem* in Public

Yes... With a Public Bus
Adult computer game Shin Koi Hime Musou ~The Legend of the Moé Commander~ goes on sale on July 23 in The Land of the Rising Sun. To whip players up into a frenzy, this large Shin Koi Hime Musou bus was spotted cruising the streets of Tokyo's geek mecca Akihabara.

A month before this title is released, a non-adult Shin Koi Hime Musou will be released on the PSP.