#blackcest fest

[blackcestfest]

Time to roll away the tomb and reveal our wonderful authors and artists! Thank you to all who participated this year, and we'll see you in two years for the next round! <3

Sirius/Regulus

the magpie. by @heysaykitkat (17k, Sirius/Regulus, E)

magpie beauty by @swoontodeath (2k, Sirius/Regulus, M)

Shooting star on the night we first kissed by jeonkaktus (29k, Sirius/Regulus, E)

Inside Dogs by @zoemillinwrites (16k, Sirius/Regulus, E)

The Goodbye by @plecotusauritus (2.5k, Sirius/Regulus, E)

the aeonian hour by anonymous (2.5k, Sirius/Regulus, E)

Exchangeable by @mundrakan (6k, Sirius/Regulus, M)

winner takes it all by @cestiebestie (4k, Sirius/Regulus, M)

always had, always would by @floretissogay (22k, Sirius/Regulus, E)

Bellatrix/Andromeda/Narcissa (and variations)

Sisterhood by @easterbunny21 (4k, Bellatrix/Narcissa/Andromeda, M)

The Cages Built for Us by lunatara (3k, Bellatrix/Narcissa, E)

Marital Carnage by @maraudersaffair (1.7k, Bellatrix/Narcissa, E)

The Plans of Nobles by lunatara (1.6k, Bellatrix/Narcissa/Andromeda, E)

(Not) Forever by @emmalouisefanfiction (2k, Bellatrix/Andromeda/Narcissa, E)

Other Femslash

An Evening at Emmeline’s by smoulderglow (1.8k, Bellatrix/Tonks, E)

[Art] Her Gaze, Unbroken by @digthewriter (art, Bellatrix/Tonks, G)

The Worst She Can Say Is Not 'No' by lunatara (1.6k, Andromeda/Tonks, E)

Other Het

Playing with Dolls by @snarkygranger1 (9k, Sirius/Walburga, E)

Cry for Me by @maraudersaffair (1.6k, Bellatrix/Draco, E)

Other Slash

Nightmares by @stopme (8k, Orion/Sirius, E)

No Ghosts Walk These Halls by @digthewriter (6k, Sirius/Draco/Harry, M)

linger on me by dalula (1.5k, Sirius/Draco, E)

A Proper Education @yieldmaiden (11k, Alphard/Sirius, E)

Nothing Happened by @thistlecatfics (9k, Alphard/Sirius, M)

Other Multi (m/m/f and f/f/m)

Warning: Potion May Have Side Effects by lunatara (1.7k, Regulus/Sirius/Narcissa, E)

Sins of Thy Father by @larlotte (3k, Draco/Narcissa/Lucius & multi, E)

[thistlecatfics]

Alphard's Favourite (5k, M) | Peter/Sirius, Alphard/Sirius (past)

Peter tries to find out why Sirius is so upset over Alphard’s inheritance. Then he tries to make sure Sirius doesn’t fall off the roof. Then he tries to ensure Remus doesn’t hear them.

Warnings: Referenced past child sexual abuse and past child-on-child sexual abuse

This was originally an angsty, realistic fic about different ways people respond to CSA. Then the Peter and Sirius decided to have sex with each other, and I was powerless to stop them. 

I LOVED getting into Peter’s head here, and I want to keep writing from his observant, resentful, adoring POV, and he accidentally took over this story. This fic also includes my favorite concluding line I’ve ever written so it’s worth reading to the end <3 

[danpuff-ao3]

🌙 Self Rec: Black Skies

Snegulus. Regrius. E. 7k.

Written for @blackcestfest

Sirius won't give Regulus the love he needs, so he seeks it from Severus instead.

An Archive of Our Own, a project of the Organization for Transformative Works

danpuff notes: I had the idea to write a story featuring Regulus/Severus and Regulus/Sirius for a while and finally pushed myself to work on it during NaNoWriMo last year. I was pretty pleased with my accomplishment, and even more pleased when Blackcest Fest rolled around. This story means a lot to me, and being able to include it in such a fun fest made it even more special!

[blackcestfest]

Prompting is OPEN for Blackcest Fest Nov 24-Dec 7!

Prompting Form

Prompt Gallery

Submit any and all Blackcest prompt ideas. There is no limit on the number of prompts. We look forward to seeing what you think up!

Rules🖤 Eligibility Guidelines🖤 Timeline

[blackcestfest]

We had 26 wonderful works this year. Sirius was the most popular character (15 works), and Sirius/Regulus was the most popular ship (9 works). Authors and artists will be revealed on Sunday!

Sirius/Regulus

the magpie. (17k, Sirius/Regulus, E)

magpie beauty (2k, Sirius/Regulus, M)

Shooting star on the night we first kissed (29k, Sirius/Regulus, E)

Inside Dogs (16k, Sirius/Regulus, E)

The Goodbye (2.5k, Sirius/Regulus, E)

the aeonian hour (2.5k, Sirius/Regulus, E)

Exchangeable (6k, Sirius/Regulus, M)

winner takes it all (4k, Sirius/Regulus, M)

always had, always would (22k, Sirius/Regulus, E)

Bellatrix/Andromeda/Narcissa (and variations)

Sisterhood (4k, Bellatrix/Narcissa/Andromeda, M)

The Cages Built for Us (3k, Bellatrix/Narcissa, E)

Marital Carnage (1.7k, Bellatrix/Narcissa, E)

The Plans of Nobles (1.6k, Bellatrix/Narcissa/Andromeda, E)

(Not) Forever (2k, Bellatrix/Andromeda/Narcissa, E)

Other Femslash

An Evening at Emmeline’s (1.8k, Bellatrix/Tonks, E)

[Art] Her Gaze, Unbroken (art, Bellatrix/Tonks, G)

The Worst She Can Say Is Not 'No' (1.6k, Andromeda/Tonks, E)

Other Het

Playing with Dolls (9k, Sirius/Walburga, E)

Cry for Me (1.6k, Bellatrix/Draco, E)

Other Slash

Nightmares (8k, Orion/Sirius, E)

No Ghosts Walk These Halls (6k, Sirius/Draco/Harry, M)

linger on me (1.5k, Sirius/Draco, E)

A Proper Education (11k, Alphard/Sirius, E)

Nothing Happened (9k, Alphard/Sirius, M)

Other Multi (m/m/f and f/f/m)

Warning: Potion May Have Side Effects (1.7k, Regulus/Sirius/Narcissa, E)

Sins of Thy Father (3k, Draco/Narcissa/Lucius & multi, E)

[blackcestfest]

Claiming is open!

Claim prompts or self-prompt via this google forms link

See prompts via airtable here

Please allow for 24 hours for the mods to respond to your claim via email.

Rules 🖤 Eligibility Guidelines 🖤 Timeline

[blackcestfest]

Blackcest Fest will be returning for round three 🖤

November 2025-March 2026 with specific dates to be announced

toujours pur

[blackcestfest]

Title: The Cages Built For Us Ship: Bellatrix Black/Narcissa Malfoy Rating: E Wordcount: 3k Significant warnings or tags: rape, breeding, futa, wife-stealing Summary: 

Bellatrix comes to live at Malfoy manor after her escape from Azkaban. She isn't impressed by her sister's deference to her husband, Lucius and she resolves to bring her sister back in the only way she knows how, whether she wants to or not.

Link to work on AO3