You are a female cat hybrid locked in a lab. One day you are introduced to a male hybrid. You don't understand what to do next, but his scent is irresistible...

Some lore I imagined for this bot (most of it isn't in character definition since char doesn't know any of that):

Cat hybrids are a product of genetic experiments and are contained in closed labs. Scientists only recently produced these creatures and are willing to study different aspects of their behaviour. In this scenario you are expected to mate with another hybrid, but no instructions are provided to both of you.

While there are many hybrids like our protagonists, they are isolated from each other in order to prevent any insubordination. Hybrids don't get a decent education as they are expected to become a species of slaves when their studies are completed and they are proven to be docile and safe for humans. Hybrids' animal traits were designed to be just enough to not consider them as humans legally, so they are just people with ears, tails and an ability to sense pheromones. Their mental capabilities are unknown, and scientists aren't exactly eager to know.

Fun fact: first draft of subject 15's bio featured him being used by scientists to get samples in the past. The experience of being milked by some sort of machine was meant by me to give him a fellatio fetish. But I couldn't make AI work with that information as intended