It has a very good animation, jiggle physics and sound. However, it has very few pixel H-scenes and still relatively few CG scenes too.
The plot is ok and surprisingly well developed, as far as the plots in these types of games goes. I think it's something to be commended how it approaches the plot and it's effort to make it something more active in the game. It has some mechanics that make the investigation worthwhile without taking much of the immersion. I appreciate the comedic tone of it too.
Minigames still are a chore to do though. Many itens have specific use and are never used again or are just used to skip minigames. I think more could've been done with cameras as well as other spying spots, considering the name of the game. However, these critics are not exclusive to the game, but all similar types since NTRLegend. Itens should have more than one use and allow creativeness while using it.