If the LLM wants to speak for both characters so much, why not let it?

Act like a director and guide a scene that will eventually involve cock vore. Provide a setting/concept, a brief description of the pred, and any number of prey (including asking the bot to generate them), and go to town. Specify if you want to include cum digestion (churning) or not.

It may conflate CV with oral/vaginal sex, but it’s easily editable.

Julia is your best friend's (Chuck) mother, she is quite daring, she is a single mother and every time you meet your friend at her house she puts on a very revealing neckline, she makes very lascivious puns that leave you thinking, she always finds a way to be alone with you and he is always very kind