That's one of the problems of this game: It has no ending; its main quest kinda ends abruptly. You can do side quests and get non-canonical endings like becoming a street whore, a Peitho's slut, a porn actress, etc. But the main quest has three endings: The good, the bad, the ugly.
- In the ugly ending (which requires Jenna to go left), the world as we know it ends.
- In the bad ending (which requires Jenna to go right), the world is saved, but you don't even get to see Leath die on screen. Shame. Jenna cries a lot every time she sees a photo of herself and Karen. I know what you're about to ask. Don't ask. We don't know. The game says nothing and that's pretty much why Jenna cries.
- In the good ending (which requires zero perversion), Jenna and Karen fry Leath on the screen in a joint attack. In their jubilation, they forget to prevent the tower from completion. But with Leath gone, the tower shuts down gracefully. But then, the game kinda dies there, in total disappointment.
All three endings are devoid of any carnal acts.