Just short for captain. He's one of the writers for the game.
DC always pointed out that it's one of the schoolgirls, so Jenny and most other characters should be out. I'd guess we can safely exclude Roxxy and Judith as well. Else I'd actually expect a more fan friendly approach, so one would be able to decide before you start playing if you want "male on (she)male" content or not. Depending on that you'll get story a or b. As it sounded back then, the female story would be a bit shorter and "weaker" - so to say a light version. But as said, that was very long ago. I mean, he'll now even include pregancy for several girls in that update, even though the poll said Eve woudln't get that, yet.