Quoted By:
Waypoint
In the future time travel is a possibility. On a distant alien world their is a dark cult comprised of women going out through all of time and space to harvest men. They take them before their deaths to not fuck with the time line, they are harvesting their blood and semen to summon their dark goddess which will allow them to control all of time and space without repercussions of fucking with the time line. It will take 12 years of a steady supply to summon the goddess.
With only 1 year to go the son and daughter (twins) of one of the first victims find evidence that the time line had been altered. They trace it back and find out about the cult's existence. They decide to fight fire with fire, they in turn go back to the past and build an army of women rescuing them before their deaths (Cleopatra, Joan of Arc, Anne Bonny and Mary Read, etc etc), their crew will consist of famous females from the past and some aliens along with some of their own friends.
The main rule of the time travel is they can only take people who are about to die so History remembers them as dead.
There father was kidnapped in the past two years before the current time line in the first harvest as a test to see if it would work.
The twins at that time would have been 5 so add 13 years for the current time line with the one year left they will be 18.
The women they rescued are generally thankful that they are not dead and agree to help them out with this mission at least until it's over. It goes Ecchi harem with the male twin and some of the rescued women are gay for the sister. Anne and Marry are completely gay for each other but are usually trying to get one or both of the twins to join them.