The lead character Takashiro Kazuyuki who works for a large pharmaceutical company was deceived and taken in by a colleague Numata asahiro and his fiancee Mizutani Mio. Worse, he was relegated by his female boss Wakamiya Kyoko
He was so in despair, but found that the division was something unusual......
The division was established to provide secret sexual service to politician and bureaucrat.
Takashiro made up his mind to take revenge on the women.
I'll have them impregnated right before their fiances.....

[From DLsite English]