A husband and wife. They are comfortable together in the feminization lifestyle for a while and then one night it unexpectedly turns into a cuckold situation as well. In my head, it's told by the perspective of the husband. His wife has been extra kind/sweet to him all day and she puts him to bed, feminized in a seperate room. This is all willing from the husband. Then the husband is awoken by sounds of loud/rough sex from a different room. Sounds are heard, words are heard, and then it goes quiet and after a while his wife comes to check on him. Then from here things could go a number of ways, but the jist of it is what I'd love to see if someone wants to make this idea a reality.