Hunting girls, of course. I've noticed that the vast majority of ryona games have you play as the victim, with the sexual content serving as a fail-state (which I always find strange, given that's supposedly the point of the game). Of those games where you do play as the villain, many seem to take place after the victim is already captured. I'm looking for games that are actually about the capturing. DiDnapper is a good example of what I'm looking for, although some actual sexual content in addition to the kidnapping is ideal.