Mou Suki ni Shite Kudasai ~Ryoujoku to Kusari to Himitsu no Ana~

There is an old western mansion on the hill of a small fisherman's town. It is owned by a chairman of a certain company. Main character is the son of that chairman. He lives in the mansion with four women servants. As of late he starts to pay them a lot of attention in attempt to record juicy moments on the camera.

[From vndbreview]