|See also:||Malfoycest, Weasleycest, Pottercest|
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Blackcest is a term used in Harry Potter fandom to describe incestuous relationships between members of the Black family. The Black family is canonically incestuous, and the parents of Sirius and Regulus, Walburga Black and Orion Black, are second cousins. Some fanworks play on the family motto of "Toujours Pur" and suggest that these characters want to keep their relationships pure, that is, in the family.
The most common pairings are permutations of brothers Sirius and Regulus Black and their cousins, sisters Narcissa, Andromeda, and Bellatrix Black. Common tropes include the siblings finding solace in each other away from their abusive or neglectful parents as well as members of the family navigating conflicting loyalties to each other and to their own sides during the war.
- I Envy Not the Beast, by Gyzym. Sirius/Regulus.
- 7 Loves/7Lives ( i called you brother seven times), by xylodemon. Sirius/Regulus.
- The Lion's Share, by Pauraque. Sirius/Regulus.
- Written All Over Me. Sirius/Regulus.
- Stay by gypsyflame. Sirius/Draco.
- in you is a skeleton by brightened. Sirius/Regulus/Snape.
- No Passion Could Reach Me by TransBoyWonder. Narcissa/Bellatrix with a side of Hermione/Bellatrix and Hermione/Narcissa
- Blood Is Rare and Sweet by thistlecat. Andromeda/Bellatrix.
- The Bones of the Lilac by bitterfic. Andromeda/Bellatrix/Narcissa.
- no correction, just cover up by basketofnovas(slashmarks). Bellatrix/Sirius.
- Favourite Method of Self-Destruction by SiriuslySapphic. Narcissa/Sirius.
- Brittle as Autumn Leaves by Musyc. Draco/Tonks.
Essays & Meta
- Blackcest, Livejournal fanworks community.
- blackcest_ml, Blackcest masterlist collating links to fanfiction and fanart for all Blackcest pairings.
- hp_blackcest, House of Black, an LJ fanfiction community. The associated archive Black Corruption is now offline.
- blackcest100, LJ drabble community.
- sbrb_blackcest, LJ comm for Sirius/Regulus.
- Works tagged Blackcest at Archive of Our Own.
- Blackcest fanart at DeviantArt.
- Blackcest tag at Tumblr.