In a modern Japan where men's fertility rate and social standing have steadily declined, a young man from an offshoot of the distinguished Amane family, who has presided over Amane City for generations, was ostracized by the beautiful and influential women of the clan due to his abnormally high sex drive, and forced to go to an all-boys school.
However, everything changed when he received the Will from the former head of the Amane family. As someone who possesses unbelievably strong sex drive and fertility for this era, he was entrusted with continuing the Amane bloodline, and given special permission to have children with any woman within the city's limits.
With the power of the Amane family's vast wealth and political influence behind him, he forcefully pins down the women who have looked down on him his whole life, pumps them full of cum and makes their bodies and minds submit completely. One after another, any beauty who catches his eyes is to be bred at his convenience and brought down to the status of a mere sex toy.
The super-legal modern-day harem daily life starts now!