What I'd like to know it whether...
- you want it to be sexy/scary in that the dialogue highly influences your imagination of the scene that may give the fright effect of a devilish girlfriend on Halloween.
- you want to use genuinely scary images (not necessarily non-sexy) to give more of a visual stimulation to induce fear.
I guess one idea I'd have is that the dommes play role as actual monsters. For example if anyone one there as ever seen, or heard of
Monster Girl Encyclopedia - a hentai focused art collection of monster girls, their roles typically involved draining you of your semen, completely.
This leads me to wonder if you want to have just T&D, or include elements to completely drain the sub of all their semen - i.e. multiple forced orgasms. I very much like the idea of a themed tease, hopefully my input has provided at least some imagination into what you might wish to create
