I like the prompt. And depending on how the story flows, it can have the potential to turn into a long-term, more story-driven RP so long as certain plot elements are added.
Of course, at the mention of vampires, my ADHD mind went toward period sex. But no one has to go there if one or both parties don't like it.
If you're still up for it, I'd be into writing it as I enjoy kinder dommes and I like writing masculine and androgynous (though more often feminine-leaning) cuntboys. Honestly every time I see a picture like this, I wonder to myself, how hot would he be with a pussy? And I'm so tempted to imagine what kind would fit him. Should he have one with large lips and smaller folds, both lips and folds being large, or small lips and overflowing large folds that spill out like petals from a blooming bud?
I do have to warn, I'm not the most consistent partner because I have several things going on and when I disappear, it's because I need a huge mental break. The inconsistency can be a turn off for many people, which I get. I'd feel the same.