Circumstances Of A Certain Stolen Wife / とある人妻のネトラレ事情

The 1st title of original brand "A Certain Wife" is about the 40-day adulterous corruption of a married woman by the company supervisor.

In the beginning, the wife's cell phone is bugged with spyware to read all her email.
Undisclosed details and photos she hides from her husband can also be accessed.

The story is told from the cheating wife's point of view, however the game is about spying on the affair.
Comparatively, there aren't a lot of core erotic scenes.
The general ending is determined in the beginning, and choices along the way create mild variations.