Alice-tachi no Gogo Vol. 1

The plot of this game is very simple: there is a big Expo in Japan, and the protagonist - working as a journalist for a company called "Oh!" (suspiciously similar to the company that designed this game) - must enter each pavilion and take pictures of the female models there. The trick is that the company is interested in erotic pictures of semi- or completely nude models, so the hero must use all his charm in order to convince the models to do so...