Lust and Power: All men are turned into raping demons, except for the protagonist, who protects his mom and sister but demands sexual favors in return
After Invasion: In a dystopian setting you return as a sort of war hero with wealth and power. You can enslave your family and neighbors. I only played the female protagonist, but the male one can do about the same.
Corruption: You feed potions to women (including your family) that make them submissive and horny.