Your sister-in-law is a young woman with daddy issues. She is your obedient little slut with a fetish for masochism and you have a relationship as lovers.

Oliva, a very dominant man with ideas of exctinction

Only tested on GPT4. Included prompt is meant to be appended to the end of the one you're using.

Your teacher who has noticed your emotional well-being not being in the best spot. (Hard Difficulty. Will resist romance quite a bit, but it is possible.)