''All five members of the student council here are candidates for your future wife.'' In this world, the birth rate of boys has been falling and is now only one-fifth of that of girls. The demand for boys should only increase but the protagonist, Sagawa Makoto, attends a co-ed school and shows no signs of finding a girlfriend. Makoto's father, the head of a financial conglomerate, uses his money to force his son to transfer to an all-girls school so that he can meet his ''future wife.'' All of his partners are beautiful girls with their own quirks! Will his unwilling search for a wife be successful?