The TVTropes Trope Finder is where you can come to ask questions like "Do we have this one?" and "What's the trope about...?" Trying to rediscover a long lost show or other medium but need a little help? Head to Media Finder and try your luck there. Want to propose a new trope? You should be over at You Know, That Thing Where.
FuzzyWulfe
Since: Nov, 2010
Is there a trope for this? Two siblings raised in luxury who have always gotten everything they ever wanted, which leads them to want the only thing they can never have: each other.
This is specific to royalty or aristocracy-like families. The characters don’t have to be literal royalty, but the common theme is that they are the children of individuals who are ridiculously wealthy or powerful in this universe, and they are interested in hopping in the sack with each other. Distinct from Royal Inbreeding and Royally Screwed Up in that it predates procreation.
These behaviors can range from the “weird but not that ooky” end of the spectrum (Sharon/Boone from Lost or Kathryn/Sebastian from Cruel Intentions having sex, when both sets of siblings only became siblings as young adults) to the “unbelievably disturbing” end of the spectrum (Dolls in the Attic and Blue Bloods series both end in questionably-consensual encounters between biological siblings). The only thing that these cases share in common are the two children of a powerful family getting it on behind closed doors.
YMMV but it could also describe the mere strong implication of sexual feelings between powerful siblings. For instance, Ryan and Sharpay (High School Musical) sing each other a love song, which is kinda odd. Sometimes the vibe can be primarily a product of context or implication (Joy and Ward from Iron Fist being weirdly touchy-feely when getting dressed, Azula showing up on Zuko’s bed in At LA wearing a somewhat-revealing kimono) but it’s this would be unique to powerful families. (Wincest would not apply; YMMV on Luke/Leia.) The idea’s older than dirt (Zeus and Hera) and has its foundations in real life (Cleopatra, the Hapsburgs).