What works and what doesn't

So some ideas in the outline work better than others when actually put onto the page. The one I am wrestling with now is the issue of Braden's (the main character) "parents." In the story his parents are actually a low level succubus and incubus that the antagonist, Jerome, is controlling and using to keep Braden's powers in check to easily control him. Succubi and Incubi are minor demons that feed off the energy of the opposite gender, usually through seducing their victims and draining their energy and life while sleeping together. So basically they are sex demons. In my script they are leaching off Braden's energy just by being in close proximity to him. Since they are demonic entities forced to do this against their will I have is written in that they have little emotional attachment to Braden and spend most of their time satisfying their lusts with each other (thus making them neglectful parents). It sounded like a great idea on paper when I outlined everything, but now that I am getting into the meat of the first act it's just coming across as very awkward and doesn't fit with the rest of the tone of the script. My script is a fantasy/adventure and on the darker side of writing, but the parents constantly doing it just seems out of place and way over the top, so I need to figure out a different way to present thier neglectfulness of their charge.