Season 1
Welcome to the Ladies Club. Rumour has it the Ladies Club was established for toying around with boys, there is only one problem, everyone is still a virgin. Higashi Shouta who overheard this, was forcibly made into a new member to keep his mouth shut. And now having the first male member, it is time for the everyone to lose their virgin status even if they have to force poor little Shouta-kun.
The Secret of the Ladies Club
At the protagonist school there is a famous club of girls said to bully and target men breaking them down with sex until they are like lifeless husks an move on to next victim. rumor says all them combine have had over 200 sex partners. One day on train the protagonist is able to hear conversation between college girls and club girls. Turns out they are all virgins who never had sex before. Unlucky (or lucky) for protagonist he is caught eavesdropping. That is day they decide to silence protagonist by finally living up to rumors by making him there target of club.
Aim for the Harem Ending!