Japanese fashion model and race queen Nanao Arai has debuted her gravure idol DVD named “Four O’clock”that was filmed in Yokohama. In one of the DVD scenes,Nanao dressed up as a sexy home tutor,which gives new meaning to studying hard. The 21-year-old Nanao attended the PR event last month in Akihabara and appeared in a sexy string blue bikini to the delight of her otaku fans. Check out her sexiness in the gallery below.
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