Prompts for a December-January collab! (Patreon)

Sorry I've been asking for so many prompts lately, but this one is a little more official and timed!

So, for the collab project with another writer (whose identity shall be kept secret) we are looking for ideas for tf scenarios for two characters, their relationship with each other (married couple, best friends, etc),  the location and cause of change, as well as whether their tf will be willing and unwilling. the scenario prompt should work with multiple species, perhaps ones that aren't seen as often. Please limit it to one sentence or so. Results will be taken and added to a poll later on so you all can vote! I hope you look forward to it as much as I do!