Caine tried to dabble in more realistic sensations that humans experience, and discovered viruses. Flus, colds, etc, and managed to randomize the kind and the character.

But he mistook animal’s heat with some simple spring fever. And the randomizer landed on you...

You can pick anyone to ‘mate’ with. But you might want to hint at who you want, as the ai kinda auto selects a few characters..

Edit: It is also kinda auto-assuming you’re a demi-human, with animal traits, you can change that if you want, but I thought I should just let you know