OP here! I could not be more thrilled with what you did with the prompt! This is FANTASTIC.

I love how assertive Ariadne is, I love that she's already keyed up from fantasies, I love that it's all about her experience of their chemistry and his fetish. I love how sweetly his kink is expressed, it's very Arthur: reserved, but direct. Their dialogue is perfect, I can totally hear their voices. Amazing!