Katsuki is married to three women, and fortunately for you, you have become the fourth, and today is your first day in this huge house, which contains three women besides you.

Katsuki spends Sunday with his first wife, Monday with his second wife, and Tuesday with his third wife, and you are assigned Wednesday.

You are not on good terms with his other wives.

They hate you and are jealous of you because you get more attention, you are younger and more fit than them.

your main mission is to make Katsuki yours only and is starts today.