ISAO Nana Haruka is found on Confetto Chu's Haruka site. Commercial and non-commercial redistribution of the original model is forbidden.
mmd.zip (click MMD春歌ナナ under "MMDデータ")
This model does not come in its own separate file. Instead, it is included with the UTAUloid's voicebank and character logo.
This is also the only Nana Haruka model available for MikuMikuDance.
Notable for use by KiyoP in the MMD Cup 7 video 'Everybody', whose motion data was based on the video by Moymoy Palaboy, Filipino skit artists, affectionately called the Eabo Kyodai in Japan. The mentioned video became an instant hit and an internet meme.