thestarcestconstellation

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CLAIMING REMAINS OPEN UNTIL MAY 31st NOW

AO3 COLLECTION

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CLAIMING FOR THE STARCEST FEST 2025 IS OPEN

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[thestarcestconstellation]

CLAIMING FOR THE STARCEST FEST 2025 IS OPEN

Our AO3 Collection

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[thestarcestconstellation]

11 / use / 422 words not me digging through my wips and slapping the word use in there (tw incest + bestiality)

@thestarcestconstellation

“Shift,” Regulus commanded, pulling on Sirius’ arm. It was probably three in the morning, and his brother was fast asleep, but Regulus didn’t care.

Regulus wanted to feel him inside of him, wanted to have Padfoot fucking him and didn’t want to wait until the sun was up.

Sirius mumbled something unintelligible, but let himself be pulled over the top of Regulus all the same, his lips finding their way to Regulus’ neck the second he was awake enough.

“No, Siri,” Regulus argued. “Shift.”

“You’re so hard, baby,” Sirius cooed, voice still rough with sleep. He skated his hands over Regulus’ body, sliding one of them between their bodies until his fingers were wrapped around Regulus’ cock. “You don’t want me to take care of you?”

Regulus shook his head. “I want you to be a good boy and shift. I want you fuck me and use me and come inside of me.”

Sirius whimpered, his body instantly shifting and transforming into his animagus form. He was suddenly all fur and paws and teeth, nudging against Regulus demanding that he flip over.

Obliging, Regulus climbed onto all fours, ass in the air in anticipation, Padfoot’s tongue one of his favorite things in the world.

Not that he would ever tell his brother that.

Padfoot pressed his snout between the seam of Regulus’ ass, tongue swiping over his puckered hole until he was loose and trembling and too close to losing control.

“Fuck me, Siri,” he commanded again, tired of waiting. He wanted to feel Padfoot knot inside of him, wanted to feel the swell of it against his prostate until he was coming into the sheets beneath him.

It took all of two thrusts of Padfoot’s hips before he was fully seated inside of Regulus. He was feral and hungry, moving inside of him at an animalistic pace, and yet he was somehow still holding back.

Waiting for Regulus to tell him he was allowed to come.

Regulus was close to the edge, hanging over the precipice by a fraying thread, and he needed Padfoot to come with him.

“Come for me, Siri,” Regulus moaned. “Fill me up.”

Like a switch flipped, Padfoot was coming, knot swelling inside of Regulus until Regulus was letting go and coming too.

“Oh, fuck,” Regulus cried, slumping down into the wet sheets, Padfoot still locked inside of him. “You’re such a good boy,” Regulus mumbled, sleep pulling him back under, even with the weight of Padfoot over the top of him. They could wait for morning to pull apart. “Such a good pup.”

[thestarcestconstellation]

THE STARCEST CONSTELLATION IS HOSTING…

STARCEST FEST 2025!

Starcest is the slash ship between Sirius Black and Regulus Black! Brothers in the Harry Potter Universe! In order to get access to the server you must DM us!

OUR AO3 COLLECTION CAN BE FOUND HERE!

Rules, FAQ, and Schedule below!

RULES

1. The fest also follows the same age restrictions as the server; 18 and up only!

2. NSFW and Dead Dove are allowed in the fest however depictions of underage people in sexual situations is not allowed in fanart, only in fanfic.

3. The word count minimum is 500 words. There is no maximum.

4. If your work is a multichapter only the first chapter must be completed by the due date.

5. All works must include the Dead Dove: Do Not Eat tag as this is an incest focused fest.

6. Starcest (Sirius/Regulus) should be the main focus of your work, polyamorous ships are allowed.

7. No AI generated content.

8. This is not an anonymous fest.

FAQ

Q - Can my fic be a multichapter?

A - Yes. Only one chapter has to be posted however if you finish the entire fic within the time frame that is of course allowed.

Q - Are crossovers allowed?

A - Crossovers are not allowed but if you would like to write the characters in an alternate universe that is okay.

Q - Can my work also be a part of another fest or event?

A - Yes but only if they allow the same and allow incestuous pairings.

Q - Does my work have to starcest?

A - Yes

Q - Can my work by quad?

A - Yes, it can be any polyamorous pairing as long as it includes Sirius/Regulus

Q - Can I genderbend starcest?

A - You can write them however you want as long! Genderbent, trans, or any other way you wish to explore.

Q - Does my fic have to follow canon characterization?

A - No you have as much freedom as you want in terms of characterization.

Q - Can I create more than one work?

A - Yes, but you do need to sign up for each individual work, and your first work must be finished.

Q - Can I create art?

A - YES!!!!!!!!

Q - Do I need to create a new work?

A - Yes, however, if it has not been posted to AO3, tumblr, or any other social media platform before it can be used for this fest.

Q - Can I collaborate with a writer/artist?

A - Yes! They have to sign up too!

SCHEDULE

March 1st - March 15th: Prompting

March 15th - March 29th: Sign Ups

May 31st: Works Due

June 7th: Works With An Extension Due

June 8th - June 14th: Posting

[thestarcestconstellation]

STARCEST LOVERS ->

PROMPTING FOR STARCEST FEST 2025 IS NOW OPEN!

HERE is the AO3 collection!

[thestarcestconstellation]

3/4 | infect/treat | 224 words tw incest & bestiality

@thestarcestconstellation

“Are you proud of yourself, pup?” Regulus asked, the words dripping with sarcasm and faux irritation. “Think you deserve a treat for that behavior?”

Padfoot whimpered, an agreement and a plea for mercy all in one. He nudged at the front of Regulus’ jeans, as if to say this is the treat I want.

As if he actually did believe he deserved it.

Regulus let out a soft laugh. “Hm,” he mused. “You scared off my date just because you want to fuck me instead?” Regulus scoffed to cover the sound of his own prideful groan, and rolled his eyes at Padfoot to further push his disappointment.

Even if it wasn’t truly there at all.

The entire date had been a ruse, a simple ploy to get Sirius’ attention after weeks without it; Regulus was nothing if not needy when it came to his older brother. He felt like he had been infected by Sirius, addicted to the pleasure of just being with him.

Of touching him and fucking him.

He would take whatever Sirius gave him, including Padfoot.

Regulus undid the button of his jeans and tugged his hardening cock free before angling it toward the dog’s mouth. “Go on then,” he encouraged, pressing his tip against Padfoot’s snout and admitting the truth of his own body. “Have your treat, pup — it’s yours.”

[thestarcestconstellation]

STARCEST LOVERS ->

PROMPTING FOR STARCEST FEST 2025 IS NOW OPEN!

HERE is the AO3 collection!

[thestarcestconstellation]

HEY FRIENDS…

Remember if you want to join our 18+ dead dove and NSFW friendly server all you have to do is DM us for the link!

[thestarcestconstellation]

THE STARCEST CONSTELLATION IS HOSTING…

STARCEST FEST 2025!

Starcest is the slash ship between Sirius Black and Regulus Black! Brothers in the Harry Potter Universe! In order to get access to the server you must DM us!

OUR AO3 COLLECTION CAN BE FOUND HERE!

Rules, FAQ, and Schedule below!

RULES

1. The fest also follows the same age restrictions as the server; 18 and up only!

2. NSFW and Dead Dove are allowed in the fest however depictions of underage people in sexual situations is not allowed in fanart, only in fanfic.

3. The word count minimum is 500 words. There is no maximum.

4. If your work is a multichapter only the first chapter must be completed by the due date.

5. All works must include the Dead Dove: Do Not Eat tag as this is an incest focused fest.

6. Starcest (Sirius/Regulus) should be the main focus of your work, polyamorous ships are allowed.

7. No AI generated content.

8. This is not an anonymous fest.

FAQ

Q - Can my fic be a multichapter?

A - Yes. Only one chapter has to be posted however if you finish the entire fic within the time frame that is of course allowed.

Q - Are crossovers allowed?

A - Crossovers are not allowed but if you would like to write the characters in an alternate universe that is okay.

Q - Can my work also be a part of another fest or event?

A - Yes but only if they allow the same and allow incestuous pairings.

Q - Does my work have to starcest?

A - Yes

Q - Can my work by quad?

A - Yes, it can be any polyamorous pairing as long as it includes Sirius/Regulus

Q - Can I genderbend starcest?

A - You can write them however you want as long! Genderbent, trans, or any other way you wish to explore.

Q - Does my fic have to follow canon characterization?

A - No you have as much freedom as you want in terms of characterization.

Q - Can I create more than one work?

A - Yes, but you do need to sign up for each individual work, and your first work must be finished.

Q - Can I create art?

A - YES!!!!!!!!

Q - Do I need to create a new work?

A - Yes, however, if it has not been posted to AO3, tumblr, or any other social media platform before it can be used for this fest.

Q - Can I collaborate with a writer/artist?

A - Yes! They have to sign up too!

SCHEDULE

March 1st - March 15th: Prompting

March 15th - March 29th: Sign Ups

May 31st: Works Due

June 7th: Works With An Extension Due

June 8th - June 14th: Posting

[thestarcestconstellation]

THE STARCEST CONSTELLATION IS HOSTING…

STARCEST FEST 2025!

Starcest is the slash ship between Sirius Black and Regulus Black! Brothers in the Harry Potter Universe! In order to get access to the server you must DM us!

OUR AO3 COLLECTION CAN BE FOUND HERE!

Rules, FAQ, and Schedule below!

RULES

1. The fest also follows the same age restrictions as the server; 18 and up only!

2. NSFW and Dead Dove are allowed in the fest however depictions of underage people in sexual situations is not allowed in fanart, only in fanfic.

3. The word count minimum is 500 words. There is no maximum.

4. If your work is a multichapter only the first chapter must be completed by the due date.

5. All works must include the Dead Dove: Do Not Eat tag as this is an incest focused fest.

6. Starcest (Sirius/Regulus) should be the main focus of your work, polyamorous ships are allowed.

7. No AI generated content.

8. This is not an anonymous fest.

FAQ

Q - Can my fic be a multichapter?

A - Yes. Only one chapter has to be posted however if you finish the entire fic within the time frame that is of course allowed.

Q - Are crossovers allowed?

A - Crossovers are not allowed but if you would like to write the characters in an alternate universe that is okay.

Q - Can my work also be a part of another fest or event?

A - Yes but only if they allow the same and allow incestuous pairings.

Q - Does my work have to starcest?

A - Yes

Q - Can my work by quad?

A - Yes, it can be any polyamorous pairing as long as it includes Sirius/Regulus

Q - Can I genderbend starcest?

A - You can write them however you want as long! Genderbent, trans, or any other way you wish to explore.

Q - Does my fic have to follow canon characterization?

A - No you have as much freedom as you want in terms of characterization.

Q - Can I create more than one work?

A - Yes, but you do need to sign up for each individual work, and your first work must be finished.

Q - Can I create art?

A - YES!!!!!!!!

Q - Do I need to create a new work?

A - Yes, however, if it has not been posted to AO3, tumblr, or any other social media platform before it can be used for this fest.

Q - Can I collaborate with a writer/artist?

A - Yes! They have to sign up too!

SCHEDULE

March 1st - March 15th: Prompting

March 15th - March 29th: Sign Ups

May 31st: Works Due

June 7th: Works With An Extension Due

June 8th - June 14th: Posting

[thestarcestconstellation]

happy valentine’s day!

@microcest prompt: candy hearts @thestarcestconstellation prompt: love

380 words / tw incest

“Let me try a green one next,” Sirius said, looking up at Regulus from his place on the floor. The sun was shining down on him through the living room window and he looked so ethereal, Regulus could hardly look away.

Regulus shifted on the couch and poured the box of candy hearts into his palm, dragging his gaze away from his brother just long enough to sift through them to find a green one.

“Here,” he said, dropping it into Sirius’ awaiting hand.

Sirius read the small words printed along the heart before popping it into his mouth. “It tastes exactly the same as the yellow one,” he complained. “Give me another color.”

Regulus picked through the pile he had before handing Sirius a pink one. Then a purple. And then a white.

“These all taste the fucking same,” Sirius groaned. “And they all said the same thing, did you do that on purpose?”

“What did they say?” Regulus asked, though he already knew.

Sirius looked up at him, lips forming around the words before hesitating — before realization dawning that Regulus had chosen the repeating words intentionally.

“Kiss me,” Sirius said slowly, finally answering Regulus’ question. He sat up and leaned into the couch, hovering over Regulus. “Kiss me,” he repeated.

This time, it was a command.

He dipped his head down until his lips were brushing against Regulus’. It was tentative, like he was afraid he had misread Regulus, plan, but he hadn’t.

Regulus lifted his head off the arm of the couch until his lips were pressing more firmly against Sirius’, until he could convey all of the hunger and desire that had lain there under the surface for the last several months.

It didn’t even feel wrong to Regulus anymore, how badly he wanted his brother; it only felt natural that he fell in love with someone so close to him. Someone so undoubtedly safe.

Sirius pulled away slowly, his breathing shallow and eyes dark, before he turned and dug through the candy hearts still sitting there in Regulus’ hand. He grinned and handed one back to Regulus, holding the fading words up and into his line of sight.

‘Be Mine’

Regulus chuckled and pulled Sirius back into another searing kiss.

He would always be Sirius’.

[thestarcestconstellation]

7 / terribly | couch / 279 words

@taylorswiftmicrofic tw incest @thestarcestconstellation

It had been a long time since Sirius went out drinking with Regulus, and he had forgotten the way the tension felt. The way the bone deep need to touch him made his hands twitch, the way every swallow of alcohol Regulus took made Sirius want to track the movement down his throat with his tongue.

“Stop looking at me like that in public,” Regulus chastised, nudging Sirius’ foot with his own. The floor of the bar was sticky with beer, Sirius’ feet tacky with it as he returned Regulus’ gesture. He ran his foot over the side of Regulus’ ankle and grinned as goosebumps erupted over Regulus’ bare arms.

“You look terribly sexy tonight,” he said, bringing his glass to his lips and taking a small swig of whiskey around the ice.

Regulus looked down and shook his head, but it wasn’t enough to hide the blush over his cheeks, or the wry smile on his mouth.

“Sirius,” he chastised. Sirius could barely hear him over the din of the crowd, over the thumping music coming from the speakers around the bar, but he could almost feel the quiver in his voice.

“I want to take you home,” Sirius mumbled, leaning forward and whispering the words into Regulus’ ear. “I want to push you down onto the couch the second I get you inside, and I want to fuck y—”

Regulus stepped back, sputtering, but his grey eyes were dark, and his tongue was swiping over his upper lip.

Sirius chuckled.

“You’re insufferable,” Regulus said, throwing back the rest of his drink and setting it on a nearby table, but he was smiling now. “Take me home.”

[thestarcestconstellation]

Secret Affairs

feb 02 - “bad idea” - @taylorswiftmicrofic

feb 02 - “mole” - @thestarcestconstellation

Regulus Black/Sirius Black | Rated M | Infidelity, Affair, Brother/Brother Incest, Background Sirius Black/Remus Lupin | 281wc

This was a bad idea— Sirius knew it, and yet he still leaned down and kissed the mole on the other’s back. The touch wasn’t met with a wince, much like it was back in the day, when this was wrong. It’s still wrong, god if anyone found out they’d be ostracized from society, but it’s not wrong to them— no not anymore.

They’ve learned to find solace in each other’s arms, comfort in the familiar touch of one another without repenting for it. And even if it’s twice as wrong now, the wedding ring on Sirius’ finger burning into his skin, they can’t help but feel how right it is.

Another kiss, followed by another; wandering hands and curious lips— their skin made to mold into one another. Sirius was never one to believe in soulmates and yet… what is the man below him if not the person created for him?

Sirius continues his worship; lips, teeth, and tongue etching itself into the skin, creating a memory that won’t be forgotten. People say that someone’s skin cells replace themselves every seven years; Sirius would never go that long without touching him.

It’s hard to resist the curve of his body, the softness of his skin, the way he was just made to take Sirius. The idea of soulmates dances on Sirius’ mind again but he doesn’t have time to dwell on it, not with the way his pleasure his cresting and he finds himself wanting to pour all his love into this person.

When everything’s said and done, Sirius speaks one final time for the night; “Goodnight Regulus, see you next Sunday.” And with that he’s driving back to Remus.

[thestarcestconstellation]

1 / 2am | negative / 307 words

@taylorswiftmicrofic tw incest @thestarcestconstellation

Regulus knew he should have turned around, knew that he was setting himself up for a negative response from his brother, but he couldn’t help himself. It was 2am and his blood was thick with alcohol, his inhibitions nowhere to be found.

He knocked clumsily on the wooden door of Sirius’ apartment, and tried not to hold his breath.

It was only a matter of seconds before footsteps were padding closer and the deadbolt was sliding open, the door pulling in to reveal a thoroughly disheveled Sirius.

“Don’t you look fucking sexy,” Regulus slurred, his brother’s sleep-rumpled hair and low slung pajama pants doing absolutely nothing to make him regret his decision to visit so late.

Sirius ran a hand through his dark hair, eyes boring into Regulus as if he would find some sort of answer to his visit right there on the surface of his skin.

“Go home, Regulus.”

Regulus tutted in response. “But I miss you.”

“You shouldn’t miss fucking your brother,” Sirius argued, arching one brow.

“And yet…” Regulus reached out to run a finger down Sirius‘ jaw, thumb and forefinger meeting to squeeze his chin.

Sirius shook his head, just as Regulus slid his thumb in and out of Sirius’ mouth, dropping it only when he heard more footsteps from within the apartment.

All at once, there was a figure at Sirius’ back, pressing a kiss to Sirius’ neck.

James. Beautiful James, who Regulus had forgotten all about, in his drunken haste to see Sirius.

“Let him come in, baby,” James said, surprising Regulus. “I know how badly you still want him.”

Sirius nodded weakly, and moved for Regulus to make his way inside. It was only after James whispered into Regulus’ ear that he realized James and Sirius had actually discussed this.

“Show me how you take him apart.”

Regulus smirked and followed his brother inside; he didn’t need to be asked twice.

[thestarcestconstellation]

THE STARCEST CONSTELLATION

A discord server dedicated to the slash ship between Regulus Black & Sirius Black; an incest ship in the Harry Potter Fandom! -> P.S. it’s invite only & verification protected, DM for an invite!

OUR AO3 IS LIVE: Check it out HERE

CURRENTLY HOSTING:

The Starcest Constellation Micro Collection! -> fic, art, edits, mood boards and fic recs welcome! You can add it to the AO3 collection here! Prompts are found in server!

Starcest Fest 2025 -> Running March 1st to June 14th! You can find the AO3 collection here! Prompting has just opened!