#Regulus bill me Black

[kiwi2229]

Bill me

(James Potter / Regulus Black / Lily Evans | 570 words)

For @jegulus-microfic prompt: Dress

It was a sunny day and all three of them were walking on the street, every now and then stopping by the shopping windows to look in. James made sure he would comment on every piece of clothing or jewellery. Lily on the other hand didn’t spend much time looking until she stopped in front of one shop with a summer dress on the display.

“Lily, you would look great in it,” James says sincerely.

“Definitely.” Regulus agrees. “Do you want to go in and try it?”

“I can’t just go in and try it. The shop looks expensive.” Lily says but her gaze lingers a little too long on the dress. Regulus smiles knowingly.

“It’s fine.” He says and opens the door for both of them. He lets them enter first and closes the door behind them. As soon as the cashier spots them, she hurries to greet them. “Good afternoon, Mr. Black.”

James and Lily immediately turn toward Regulus with confused looks. “Hello,” Regulus answers.

“Please, have a seat. Vincent is in the office; I will call him for you.” The cashier gestures towards the sofa.

“Who is Vincent?” Lily asks.

“The owner.” Regulus shrugs and links their arms so he can lead her to the sofa. James has an amused expression on his face and when they pass him, he wraps an arm around Regulus’ waist and whispers to him.

“Of course, you know the owner, you pretentious git.”

Regulus gives him an unimpressed look. “I shop here.”

James laughs out loud. “Of course, you do.”

“Oi, what does that supposed to mean?” Regulus asks but James’ answer is disturbed by the entrance of Vincent, an older-looking Italian man with his hair slicked back.

“Mr. Black.” He comes towards Regulus, and they shake hands. “I hope you are having a great day. What can I do for you?”

Regulus sits down on the sofa, tugging James right next to him. “My beautiful girlfriend would like to try the summer dress you have in the window.”

Vincent looks towards Lily. “Excellent choice, Ma'am. It’s our new collection. It arrived just two days ago.” He gestures to the door behind him suggesting Lily should follow him. The girl looks back nervously to her boyfriends but both of them nod in reassurance.

When Lily comes out James and Regulus can only stare. Because she looks like a goddess. The dress fits her perfectly. But the most beautiful is the look on Lily’s face when she sees herself in the mirror. Regulus can tell she loves it.

“Lils, you look amazing. They are perfect for you.” James says and Regulus can only nod. Lily blushes and goes back to the room to take them off.

“We should have a picnic date, Reg. Lily would wear this dress and you can braid flowers in her hair.” James says and presses a quick kiss to Regulus’ hair.

“Sure. This Saturday?”

“Great. I will cook for us.” James muses and rest his cheek on Regulus’ shoulder.

“Did you like them?” Vincent asks as soon as Lily comes back.

“Yeah. How much do they cost?” She asks.

Before Vincent can answer Regulus is already standing up, holding his hand towards James to help him. “Doesn’t matter. Send the bill and the dress to my address as usual. That will be all. Thank you, Vincent.” And without another word, he leads them out of the store with satisfied smirk.

[sundropcass]

i finally forced myself to read pathological people pleaser by rweoutofthewoodsyet and it was the hardest and most painful read of my entire life. oh my god. anyway 10/10 would recommend to a friend but i also fear i need to call my therapist except it’s 5:30am so i will not be calling her any time soon.

[hauntedgovernment]

hehehehehe, my birthday was yesterday.. I’m an adult now!!! (kill me /j)

[stanelyurisisaliveandwell]

being someone in multiple fandoms makes me so self aware istg.

like i have a type- jegulus is literally the same thing as stenbrough PROVE ME WRONG

[agreeeeeeeeeee]

Agreee's Library

Emoji Key: SFW 🤍 | NSFW ❤️ | Angst 🖤 | Fluff 🩷

feat. Wizarding World, MCU, Stranger Things, & more!

Wizarding World

George Weasley

A Weekend At The Weasley's ❤️🩷

The No-Dating Rule ❤️🩷

A Christmas Gift 🖤🤍

Bill Weasley

'Magic Lessons' Series (part 1, part 2, part 3) ❤️🖤

Charlie Weasley

'Best Friends Brother' Series (part one, part two) ❤️🩷

1000 Secrets 🤍🖤

Draco Malfoy

Bad Santa ❤️🖤🩷

Flutterby Baby ❤️🖤🩷

Sirius Black

'Hit Me Where It Hurts The Most' Series (part one, part two, part three, part four) ❤️🖤

The Black Dog and His Bluebird ❤️🖤🩷

Regulus Black

What's My Name? ❤️🖤

Barty Crouch Jr.

I Wanna Be Yours ❤️🖤🩷

James Potter

Work For It ❤️

Remus Lupin

1000 Inked Scars ❤️🖤🩷

Wolfstar

Lockjaw ❤️

Jegulus

Seducing A Scrooge ❤️🩷

Rosekiller

What Is This Feeling? LOATHING 🖤🤍🩷

Drarry

Freefall (roommates!au) ❤️🖤

MCU

Steve Rogers

I Can Do It With A Broken Heart ❤️🖤

Stranger Things

Steve Harrington

Blue Christmas ❤️🖤🩷

1000 Glances 🩷

Eddie Munson

Christmas Karaoke ❤️🩷

The Tortured Fangirl's Department Series

I Can Do It With A Broken Heart (Steve Rogers x assassin!reader) ❤️🖤

My Boy Only Breaks His Favorite Toys (Paul Lahote x human!reader) [part one, part two] ❤️🖤

How Did It End? (Gale Dekarios x fem!Tav) 🖤🤍

Misc.

Thanksgiving In Baldur's Gate (Gale Dekarios x Tav) 🩷🤍

Published Work

The Raith Brothers Trilogy

Memento Amore

Memento te Aurum

Memento Sentire - Coming Soon!

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[padfootfest]

Padfoot Fest 2024 Reveals

Hello everyone!

The time everyone has been waiting for has come. It's been a week since our last Padfoot Fest work was posted which means we can now reveal all the authors, so everyone can run to show more love for their other works.

As mods, we would like to sincerely thank all the participants. We are immensely grateful to them for creating a great variety of fics, all celebrating our beloved Sirius Black. We love the works, and we are so so proud of everyone's efforts. We are so thankful for all these works that contribute to the amazing thing that is the Marauders fandom.

Moreover, this was the first year of our fest, and we are overwhelmed with the interest it has garnered. We would like to thank everyone who keeps following, reblogging, commenting and so on. We also can't wait to introduce more events in the following months that will help us shorten the time we've got to wait until the second year of Padfoot Fest opens in 2025. So stay tuned and keep sharing the Padfoot love.

Now without further ado these are the amazing writers from Padfoot Fest 2024 in the order of their posted work. Click the title of the fic to read their works.

tenrousei_kuroi - Is It So Frightening (to have me at your shoulder) (Regulus Black/Sirius Black, Regulus Black/Remus Lupin, Regulus Black & Hermione Granger)

LippSkinn - Silence (Sirius Black/Remus Lupin)

shadowmun - Hero with no name (Sirius Black/Evan Rosier)

Soulniar - Freres, Pour Toujours (Regulus Black & Sirius Black)

LadyofWiltshire - I Really Don't Know Love At All (Sirius Black/Remus Lupin)

dystopianRebel - Soulmates by Arrangement (Sirius Black/Rabastan Lestrange, one-sided James Potter/Lily Evans, Catriona McCormick/James Potter, Peter Pettigrew/OFC)

RockOnGoldDustW - Kiss With A Fist (Sirius Black/Hermione Granger, Sirius Black/OFC)

EastWindmlk - two for divine, three for magic (James Potter/Lily Evans Potter, Sirius Black/James Potter/Lily Evans Potter)

sliebman10 - A Flicker Of Hope (Sirius Black & Minerva McGonagall)

emlovessid - two paper airplanes (Sirius Black/Remus Lupin

veganbutterchicken - Where There Is Love, There Is Faith (Sirius Black/Remus Lupin)

Grey_Kenaz - A Prank Gone Awry (Alphard Black & Sirius Black, Regulus Black & Sirius Black, Sirius Black & James Potter, Sirius Black & Walburga Black, Orion Black & Sirius Black)

MidnightStargazer - An Omen of Death (Regulus Black & Sirius Black)

FivePips - Call it Pathetic or Poetic (Sirius Black/Remus Lupin)

procrastinator123 - Grim Hunt (Sirius Black/Kingsley Shacklebolt)

HuntersWithCellPhones - I would not ask and neither would you (Regulus Black & Sirius Black, Regulus Black/Barty Crouch Jr.)

EuripidesTrousers - The Road to Sweetwater (Sirius Black/Remus Lupin)

maraudersaffair - Lucky for You (Sirius Black/Bill Weasley)

EllieMarchetti - A Ghost from the Past (Sirius Black/Hermione Granger)

onehundredflamingos - always yours (Sirius Black/James Potter)

atropos_aeneas - just being neighbourly (Sirius Black/Remus LupinSirius Black & Remus Lupin)

youprettythings - I'm Waiting Here For You (Sirius Black/Remus Lupin)

andthemarauders - Halloween 1981 (Sirius Black/OFC, James Potter/Lily Evans Potter, Remus Lupin/OFC)

RockOnGoldDustW - Nowhere to Run (Sirius Black & Andromeda Black Tonks, Regulus Black & Sirius Black)

goldenpropeth - everywhere (i want to be with you) (Sirius Black/Remus Lupin, Sirius Black & Hope Lupin, Sirius Black & Lyall Lupin)

Strawberrybasil - Seeking Omens (Sirius Black & Harry Potter)

[lexithwrites]

Please more sugardaddy moonwater hcs. Pls!!

this might get long sorry (but this is kinda what i wanna write next so pls give me feedback) xoxo

they met through a sugar daddy website that james showed to remus one night (he's on it and is absolutely not telling him that he's met a guy)

remus is so embarrassed at first, he was on tinder like twice and had bad dates because of it so he isn't exactly confident this will work but he does get a lot of attention

he gets messages from kinda old guys, and a few older women, that are either way too pushy with what they want in return for an 'allowance' or just kinda creepy and he almost deletes it

then he gets a message off of someone young, maybe his age, and he's gorgeous

remus is so sure its a scam, no one can look that good and be on an app like this but he messages them anyway when they say hi first, and he asks about them and the guy is regulus arcturus black (he gives his full name, he's a loser) and he's literally just looking for company and someone to spend money on, nothing in return, he doesn't need it

remus is kinda shook because like what?? how is this guy lonely he must have friends but turns out regulus just has rich friends that can buy their own things, he doesn't have anyone to spend time with other than when he goes to family events which he hates

and remus is like okay,,,,maybe drinks first and regulus sends him the location of probably the nicest bar in london and remus is close to passing out because he cannot afford this at all but he said he'd go

he wears his nicest outfit (its a brown jumper and some nice trousers and his converse, he cant afford anything else rn because his cat started a hunger strike against the food he's had for a year and remus had to upgrade, kids eh?)

regulus is already there because he is never a minute late, and checking his rolex thinking he's been stood up but remus runs in like 'hi im so sorry i missed the train hi' and regulus is in love already, just straight up his heart starts hammering in his chest because not only is remus gorgeous in a weird, dorky way but he's just...he's adorable

regulus is calm tho, think levi ackerman levels of expression, he just kinda sits there arms folded and asks remus questions about his life and what he would like as an allowance and remus is just,,,confused?

he asks why regulus wants to spend his money on him and regulus insists he's bored (he's so fucking lonely and wants someone around him to dote on) and just needs a date to events as his parents are giving him shit for being single at 26

remus is unsure but decides fuck it, james can probably throw hands if regulus tried anything, and they agree to attend some gala together for regulus' family and remus says he'll have to get new clothes and regulus then sets up a date the next day to buy him an outfit and its a lil montage of regulus giving remus clothes to try its very cute

and is remus confused and guilt ridden for this man spending money on him? yeah, duh, but also he doesn't have to pay his bills anymore, he has amazing clothes, his stress levels are so fucking low than before, and he likes regulus....he really really likes him

and regulus is getting what he wants, but also he has remus lupin as eye candy and that's an added bonus, and god remus is so adorable and nerdy and he wants to climb him like a tree

also yes remus sees james at the event and he's like what the fuck are you doing here and turns out james is with HIS sugar daddy, aka regulus' brother and its a whole ordeal

and maybe one night regulus invites remus to stay with him for the night because its too late to get the train and he doesn't really want to let remus go and maybe they drink wine and maybe they touch just to see what its like and maybe MAYBE they kiss and make out and fuck slow and deep and then AND THEN—

i might write more if people like this idk,,,,

[forestdeath1]

Canon Sirius through quotes

Part 1. Appearance

In the canon, he's described as handsome 3 times from Harry's point of view - but never pretty. By the way, Harry has only described four people as handsome (+ Tom Riddle, Cedric Diggory and Gellert Grindelwald).

"Sirius was tall and handsome. He loped with an easy grace, his hands in his pockets and a grin on his face."

"Beside him was Sirius, carelessly handsome, his slightly arrogant face so much younger and happier than Harry had ever seen it alive."

"Sirius stared around at the students milling over the grass, looking rather haughty and bored, but very handsomely so."

"Sirius was lounging in his chair at his ease, tilting it back on two legs. He was very good-looking; his dark hair fell into his eyes with a sort of casual elegance neither James’s nor Harry’s could ever have achieved, and a girl sitting behind him was eyeing him hopefully, though he didn’t seem to have noticed."

"He's still handsome, isn't he, even after Azkaban?" (Tonks about Sirius, Pottermore)

So, Sirius was handsome, but definitely not pretty. The word handsome can be used for all genders, highlighting attributes like strength, elegance, or a more classic form of beauty.

His height is described as tall several times. James is described as the same height as Harry in the Deathly Hallows, meaning at the time of his death James was as tall as Harry in the 7th book: “James was exactly the same height as Harry”. He was described as tall in later books but not as tall as other characters like Dumbledore, Ron, Sirius, Draco, Tom Riddle, Bill.

In England, as in most Western countries, a man is usually considered tall if he is over 6 feet. Typically, very tall is considered to be 6 feet 3 inches and above. So, James could be somewhere from 6 to 6'3", and Sirius taller, say 6'3"-6'4", Remus possibly under 6', but not short, since Harry doesn't note his height at all.

"To Sirius’s right stood Pettigrew, more than a head shorter, plump and watery-eyed, flushed with pleasure at his inclusion in this coolest of gangs, with the much admired rebels that James and Sirius had been."

The average head length of an adult, regardless of gender and age, usually about 8.7 to 9.8 inches. So, Peter was noticeably shorter.

6'3"-6'4" is indeed very tall. (When fanon gives Remus a height of 6.7, I wonder, have you often seen such giants in real life? My granddad is 6'8" – and he's huge to me, frighteningly so.)

After Azkaban and in the fifth book, he has long hair, but in the fourth book, when Sirius is doing well and is relaxing somewhere in the south, he has short hair.

"Sirius looked different – the hair was short and clean now, Sirius’ face was fuller, and he looked younger, much more like the only photograph Harry had of him, which had been taken at the Potters’ wedding."

"Sirius, when he still had short hair" (Moody about Sirius in the Order of the Phoenix photo)

Though in the story about Sirius and James for the auction, Sirius had long hair in 1977:

"The one who had been driving had long black hair; his insolent good looks reminded Fisher unpleasantly of his daughter’s guitar-playing, layabout boyfriend."

I prefer him with long hair, so that's usually what I go with.

Build isn't described. We know Regulus was definitely smaller than Sirius, but nothing specific about Sirius himself.

"Regulus was instantly recognisable as the boy sitting in the middle of the front row: he had the same dark hair and slightly haughty look of his brother, though he was smaller, slighter and rather less handsome than Sirius had been."

His animagus form is a bear-like dog of huge size, but that’s a weak argument.

"The enormous, bear-like dog bounded forwards."

Perhaps canonically Sirius was naturally inclined to muscle (i.e., tall and muscular rather than lanky, because lankiness usually suggests skinniness. Regulus, likely, was lanky), but since he probably didn't engage in activities like workouts, he wasn't exactly buff. Muscles don't just appear out of thin air, but some people are naturally more muscular. Basically, a normal build that doesn't need any special description (not bulky, not skinny, just normal, but tall).

He definitely doesn’t have any tattoos described, but it's unlikely Harry would have inspected every part of his body for tattoos... So, I don’t quite get it when someone says "Sirius didn’t have tattoos". It's a blank slate.

[bradleysass]

Gone - @black-brothers-microfic - Word Count: 543 - Starchaser + Wolfstar

James Potter was a nightmare without Regulus.

It had only been two days since Regulus left for a week-long work trip, but James was already acting like someone had cut off his lifeline. Sirius and Remus knew their friend could be dramatic, but this was a new level.

"James," Sirius groaned as he glanced at his phone, a FaceTime request from James lighting up the screen for the third time that day. "We just saw him last night. He’s alive and well. Thriving, even."

"Not the point," James said, flopping face-first onto the couch in their shared living room like a man bereft of all hope. "The point is that I’m dying. He’s not here. I’m not here. What am I supposed to do for an entire week?"

Remus barely looked up from his laptop. "I don’t know, maybe something productive? Reg wouldn’t want you sulking around here like this."

Sirius grinned, clearly enjoying the scene. "Honestly, Prongs, it’s pathetic. Who knew you’d turn into such a needy little thing without my brother around? Didn’t you just say he’s clingy last week?"

James sat up to glare at him. "That’s different. It’s cute when he does it. I’m suffering."

"James," Remus sighed, pinching the bridge of his nose. "You’ve been over here for three hours. What exactly do you want us to do?"

"Keep me company," James said, his tone far too serious for the absurdity of the request. "You’re supposed to be my best friends. Isn’t that what best friends do? Help me survive my week of torment and—"

Sirius tossed a throw pillow at him, hitting James squarely in the face. "Moony and I were trying to have a quiet afternoon. We don’t need you moping around like a love-sick golden retriever."

"Love-sick golden retriever?" James repeated, scandalized. "I’ll have you know I’m more of a stoic, tragic hero whose one true love is away."

Remus snorted. "Stoic, sure. Tragic, definitely. But if you’re a hero, I’m Dumbledore."

Sirius cackled, throwing his head back in laughter. James scowled, crossing his arms and sulking in the corner of the couch like a child who’d just been denied dessert.

"Fine," James muttered. "I’ll just sit here quietly, then."

That lasted all of two minutes.

"Hey, Moony. What are you writing?"

"Work."

"Can I help?"

"No."

"Pads, wanna play FIFA?"

"Nope."

"Are you guys always this boring when I’m not here? No wonder Reg is so devoted to me. I’m probably the most fun he’s had in years."

Sirius groaned. "James, I swear to Merlin—"

"You’re gonna miss me when I'm gone," James cut in, grinning as if he’d won some invisible battle.

"Gone?" Remus asked, his voice tinged with hope.

"Yeah. I’m going to take a nap in your guest room," James said, standing up and stretching. "Don’t worry. I’ll be back in a couple hours."

Sirius threw another pillow at him as he walked away, but James dodged it with a laugh.

"I’m sending Regulus a bill for emotional damages," Sirius muttered, flopping back onto the couch.

Remus just sighed, closing his laptop. "You know he’s going to keep doing this until Regulus gets back, right?"

Sirius groaned louder, throwing his arm dramatically over his face. "Next time, we’re locking the door."

[marauders-brain-rot]

Jegumas - Day 3: Reindeer - 539 words - @noblehouseofgay

“Seriously, where are you taking me?” Regulus asked for what felt like the hundredth time since they’d left home.

“It’s a surprise,” the smile on his lips betrayed any frustration he might’ve tried to portray in his response. “We’re almost there.”

“We’re almost where?” Regulus huffed in annoyance.

“Quit being so grumpy, you’ll love this I promise,” James pleaded as he grabbed Regulus’s hand, dragging him along. Before long they made it to a large open area surrounded by a fence with a barn on one side. There were enough people milling about that it blocked Regulus from seeing what James knew would be there, and he couldn’t have been luckier at the outcome.

“Jamie?” Regulus asked as James walked up to a ticket booth.

“Two please,” he told the man in the box before handing over a few bills. The man handed him two paper tickets and waved them through, James turned around with a smile. “Come on Reggie.”

“What are we doing?” He asked, but James ignored him as he led him over to a stall that was handing out paper bags. James exchanged their tickets for two bags before leading them over to a section of the fence that wasn’t too densely populated so Regulus could see.

“Here,” he handed over one of the bags, a small pouch filled with raisins and dried apples.

“Reindeer?” Regulus asked in amazement as one of them came over, nudging its nose between the holes in the fence.

“I heard they were coming around and thought you might like to feed some,” the idea sounded so stupid to him now though. Poshly raised Regulus Black who’d never physically gotten his hands dirty in his life wanting to feed and even pet animals that likely hadn’t bathed in ages? “Maybe it was stupid.”

Regulus wasn’t listening to him though. Instead he was staring wide-eyed at the large animal before him gently eating a dried apple slice out of his palm. When the reindeer moved to chew, Regulus tenderly reached his hand forward and petted along its snout, a childlike look of wonder overtaking his features.

“Thank you,” he smiled softly.

“Did I do good?” James asked hopefully.

“Perfect as always,” Regulus answered with a bright smile. He stood there for a moment, not saying anything at all. And then suddenly, “can you translate what they’re saying?”

James, at a loss for words, burst out into laughter. “I can sure try love,” he answered as he slung his arm around Regulus’s shoulders. They walked around for hours feeding the different reindeer, James attempting to translate for Regulus but finding that he was making up more than he was actually understanding. He had a feeling that Regulus knew that too based on the glimmer in his eye. Neither would ask just as neither would ever confirm for one another the truth, content to live in the lie they concocted. It would serve as a lesson for them both that not all lies needed to be born out of desperation and necessity, nor did they have to be evil and ugly and all consuming.

Sometimes a lie could be beautiful and full of unspoken promise, sometimes it could be the start of something new.

[galixy0universe]

Kinktober 2024 Harry Potter Edition

Kinktober List

Is it late? Yes, I got sick when I was supposed to upload it and then was busy with my life afterward. I hope to do a big upload with last week's and this week's prompt on the weekend. Until then, here is the list and the requests that were accepted. Please note that if it was not accepted, it may be because I just don't have confidence writing that specific kink. All of these will be rather short to keep up with everything I have to write and my IRL things. I will make a final master list at the end of the month with all the links if I can. If you still want to make a request, let me know; anything in Italics can be replaced.

Bill Weasley-Daddy Kink

Weasley twins-chubby! reader dirty talk/body worship

Breeding-Fred

Threesome both (non-incest)- Weasley Twins

Thigh riding-George Weasley

Role play- Fred Weasley

Spanking-James Potter

Lactating-Sirus Black

Creampie-Percy Weasley

Uniforms-Remus Lupin

Fingering-Sirus Black

Glory Hole-Garreth Weasley

Mirror Sex-Draco Malfoy

Love Bites-Neville Longbottom

Pregnant-Ominus Gaunt

Breeding-Tom Riddle

Tifuck-Harry Potter

Phone/Video-Bill Weasley

Collar-Bill Weasley

Double Pen.-James Potter & Sirius Black

Foreplay-Neville Longbottom

Toys-Charlie Weasley

Anal-Tom Riddle

Dom/Sub-Bill Weasley

Quickie-Percy Weasley

Biting-Harry Potter

Aphrodisiacs-Sebastian Sallow

Exhibition-Remus Lupin

Free Use-Regulus Black

Gloves/Leather-Ominus Gaunt

Car Sex-Draco Malfoy

[lulublack90]

Prompt 23 - Attitude

@jegulus-microfic July 23, Word count 560

Previous part First part

Regulus sat down at the table and opened the menu, ignoring his brother’s protests. 

“Are you going to kick James out as well for bringing me here?” Regulus said, coolly. 

“No,” Sirius started to say,

“Exactly. I’m staying. Now I’ll have what James is having, it sounds good.” James smirked behind Sirius’s back as he tried and failed to keep his laughter at bay. 

“But you don’t eat dairy, or carbs, or processed ham for that matter. How are you going to eat a cheese and ham toastie?” Sirius crossed his arms and glared at Regulus. 

“It’s been five years since you last spoke to me and ten since you cared. Things change, Sirius. I changed.” Regulus closed the menu and clasped his hands on top of the table. “Now are you going to stop with the attitude and serve your paying customers or am I going to have to leave you a bad review?” Regulus quirked an eyebrow at this brother. Sirius spun on his heel and went into the kitchen area, grumbling the entire way. 

“Wow and here I thought Moony was the only one who could get him to do what he’s told.” James chuckled. 

“Me too,” Remus huffed in disbelief. “Right, two of the usual coming up. Regulus, please stick around. I feel like this is going to be fun,” He winked at Regulus before returning to the counter to fill their order and serve the small queue that had formed in his absence. Regulus grinned wickedly in return and settled into his seat. 

“Oh, you’re going to be trouble, aren’t you?” James snorted as he sat opposite the younger Black brother. 

“I have no idea what you mean,” Regulus smiled angelically. “So what’s your usual coffee order?”

“Pumpkin spice latte,” James said nonchalantly.

“Oh Lord,” Regulus moaned as he buried his head in his hands. 

Regulus ate every bite and drank every drop and when he asked for the bill, Sirius took out his pad and told him to take the ticket to Remus at the till, and he’d charge him. 

“Your money is no good here. You’re family,” Remus told Regulus, waving him off when he tried to pay for his lunch. “Come back soon,” Remus called after them, cheerily. James grinned. Remus may be the voice of reason, but it didn’t mean he didn’t like to add his personal brand of chaos into the mix. “James, tell Regulus about the BBQ next weekend. You’re more than welcome to come, Regulus.”

“Remus!” Sirius admonished his boyfriend.

“Yes my dear,” Remus answered, and then the door shut behind them, so all James could hear was the muffled words of Sirius blowing a gasket. 

“So you’re friends with my brother, typical. The first fit guy I throw an apple core at happens to be the man my brother replaced me with.” Regulus groused. James stopped listening after Regulus called him a fit guy. 

“You think I’m fit?” He asked dreamily. 

“Have you seen yourself?” Regulus scoffed as they rounded the corner back towards the park. James had no idea where they were going, he was just happy to follow. “So this BBQ, do I need to bring anything?” James laughed and, feeling a surge of confidence, wrapped an arm around Regulus and tucked him into his side as they took a leisurely stroll around the park. 

Next part

[ecstarry]

Bendy Straws // @fromagony @sixlane

“Would you like one sir?” 

Regulus was ready to give the most intense eye-roll known to mankind when he lifted his head from his book—only to see a kid, no older than eleven, staring eagerly at him with a small box full of colorful bendy straws.

He had a horrible morning and went to a park that was sure to be empty at that time of day. The urge of frustration he felt when his reading got interrupted faded instantly when he realized it was a boy who wanted his attention. The angry, irritable, short-tempered Regulus Black had one soft spot —children. 

“What are you selling?”

“Just some straws. I’m saving up to buy a new controller for my xbox,” the boy smiled widely. 

Regulus put down his book and raised his hips just enough to reach for his wallet. 

“How much for all of them?” 

The boy’s eyes widened. “Really!?”

His enthusiasm reminded him of his goddaughter, Luna. He assumed the boy was probably around her age. Regulus made a mental note of bringing her to the park one day, maybe she could make a new friend. 

“Harry! There you are!” A tall man came rushing over, panting and breathless, before coming to a stop next to the boy.

“Dad! This man offered to buy all of it.” 

The father turned to face Regulus and smiled apologetically and sweetly at him. “You don’t have to do that.”

Regulus blushed at the sound of his voice and the depth of his eyes. He cleared his throat before speaking. “It’s okay, really.” He handed Harry a bill that more than covered the cost of all his merchandise. “They’re for my goddaughter. She’ll love them.”

Regulus must’ve said something right because the man’s eyes softened, a smile forming at the corner of his lips. 

“How old is she?” 

“She’s 11, a very sweet girl.”

“Oh! That’s Harry’s age.” The man responded enthusiastically, he gestured towards the empty space next to Regulus’ on the bench.

“Go ahead.” 

“I’m sorry if this is straight forward, but we just moved here and I would love for Harry to make new friends. Would it be too weird and naive of me to ask for your number so we can arrange a playdate at the park?”

Regulus pondered for a moment, unsure if his trust in this mysterious man was based on any real signs of reliability or simply because he was insanely good-looking and Regulus wanted an excuse to get to know him better.

“Sure.” Two things could be true at the same time. 

“Perfect.” He took out his phone and gave it to Regulus. 

“I’m James.”

“I’m Regulus.” He handed back the phone and their fingers touched. James’ hand was warm, they lingered. He was never one to enjoy the cold. 

“Like the star, I like it.” 

“Yeah, exactly like that.”

[coyotelip]

starchaser (+ onesided moonwater) microfic: salt, hypnotized || MCD || @into-the-jeggyverse @taylorswiftmicrofic || wc: 687

Every Saturday, the same man comes to the restaurant. 

They are a fairly prestigious restaurant, so regular customers are not uncommon, but this man is particularly eye-catching. He is always dressed in a perfectly tailored suit over a black shirt. In fact, all of his clothes are black, which suits his pale skin and black hair. He books a table for the same time, arrives exactly 5 minutes earlier, orders the same dish with the same wine. 

He is always alone.

This sets him apart from others, because such prestigious places are used for dates or meetings with partners to impress. However, it seems that the man has no one to impress. He is sitting at a far table under a painting of a forest landscape, eating his meal slowly and with manners and watching the candles on the table. 

He seems to be hypnotized, sometimes he can take a sip of wine and roll it around in his mouth, watching the flame at the end of a long candle for a couple of minutes. 

Remus is equally hypnotized by these moments, but it's not the candle, it's this man, his slow and graceful movements. And although he is dressed in black, he acts on Remus like a flame on a moth. He wants to get closer, wants to hear his voice and smell his cologne. 

However, the man's table is not assigned to him, and Remus does not even get the opportunity to ask if he needs some water or the bill, or to say bon appetit or good evening. 

So he stays in the corner, hypnotized by the unattainable flame, running through hundreds of questions in his head and wondering why. 

◇◇◇

Every Saturday, Regulus comes to their place. He comes to their restaurant, at their time, sits at their table, orders their favorite dish, and spends exactly the same amount of time as it took James on their first date to charm Regulus completely. Thirty-three minutes.

He recalls how the wine tasted the sweetest on those evenings together, how everything around them disappeared for him, and they existed in their own bubble, sharing events in their lives, discussing colleagues and friends. They met their anniversaries, birthdays, and celebrated promotions at work here.

James proposed to him here. At this table, with a bottle of this wine, five years ago. He hid the ring in the salt and made Regulus laugh with this incredible performance.

“Oh, I think the salad is under-salted today... Mm, something is wrong with this saltine, could you please take a look, dear?”

“Oh my god, it's probably just empty, call the waiter and they'll replace it”

“I don't want to bother them with something so stupid, but look, for me?” James' big eyes does wonders on Regulus, so he couldn't refuse and took the salt in his hands, unscrewing the lid.

Only to find a silver engagement ring with an emerald inside instead of salt.

Four years ago, they got married.

Three years ago, they bought a house on the outskirts of town because James wanted Regulus to have a studio at home.

Two years ago, their house burned down with everything inside. With James inside.

And the most painful thing was that Regulus was left with nothing, not a single thing, because the house had everything. He didn't care about the documents or his studio, all of which could be repaired with money. However, he did care about the things they had earned together, about their photos and books with notes, about gifts from his husband, about his things. He cared about James's body, which remained there, right in front of the door, because he hadn't managed to get out before he lost consciousness.

Regulus was left with only memories, and he decided to drown himself in them, finding no other way out.

And every Saturday he came to their restaurant, sat down at their table and ordered their meal, hypnotized by the candle in front of him, begging for the little flame to swallow him up and take him away with it, just as it had once taken James away from him.

[anything-4-0ur-moony]

i was listening to piano man and ive always thought it would make like a good edit or long oneshot or something so i bothered to write up my idea and imagine all the ways it could be filled with angst

james is the piano man, he brings comfort to everyone even of it harms him (how people were like why tf are you at this bar you should be doing real performances)

There's an old man sittin' next to me

Makin' love to his tonic and gin

He says, "Son, can you play me a memory?

I'm not really sure how it goes

But it's sad and it's sweet and I knew it complete

When I wore a younger man's clothes

this is alphard thinking back on like a lover who passed, kinda like him and eli in CR

Now John at the bar is a friend of mine

He gets me my drinks for free

And he's quick with a joke or to light up your smoke

But there's some place that he'd rather be

He says, "Bill, I believe this is killing me"

As the smile ran away from his face

"Well, I'm sure that I could be a movie star

If I could get out of this place"

john is regulus, in this case ‘here’ is the house of black. he’s stick and he desperately wants out but can’t leave

Now Paul is a real estate novelist

Who never had time for a wife

And he's talkin' with Davy, who's still in the Navy

And probably will be for life

wolfstar. sirius is paul, remus is davy. this really needs no altering, paul and davy are together and so are sirius and remus

lily is the waitress who’s practicing politics, trying to work her way up even when things are against her

i love this song so much, i need tickets to see him and stevie

[hollowed-theory-hall]

Any HC's or theories on Regulus Black?

Hi! This was a really fun ask actually and I ended up blabbering a lot about Regulus Arcturus Black because I have thoughts.

Okay, so I'm going to do something similar to what I did with Theodore Nott since there isn't a lot of info about Regulus, but there's a lot implied and I love extrapolating. I think Regulus is a fascinating character that can be read in multiple ways (part of the fun!)

It got a bit long, but here are my thoughts about him:

The Noble and Most Ancient House of Black

“Leave?” Sirius smiled bitterly and ran a hand through his long, unkempt hair. “Because I hated the whole lot of them: my parents, with their pure-blood mania, convinced that to be a Black made you practically royal . . . my idiot brother, soft enough to believe them . . . that’s him.” Sirius jabbed a finger at the very bottom of the tree, at the name REGULUS BLACK. A date of death (some fifteen years previously) followed the date of birth. “He was younger than me,” said Sirius, “and a much better son, as I was constantly reminded.” “But he died,” said Harry. “Yeah,” said Sirius. “Stupid idiot . . . he joined the Death Eaters.” [...] “No, no, but believe me, they thought Voldemort had the right idea, they were all for the purification of the Wizarding race, getting rid of Muggle-borns and having purebloods in charge. They weren’t alone either, there were quite a few people, before Voldemort showed his true colors, who thought he had the right idea about things. . . . They got cold feet when they saw what he was prepared to do to get power, though. But I bet my parents thought Regulus was a right little hero for joining up at first.”

(OotP, 112)

So, first, we have some background. Regulus Black was the younger brother of Sirius. Part of the main male line of the Noble and Most Ancient House of Black.

What we know of Sirius' childhood is that the Blacks were pure-blood fanatics. From Elladrora who hung house-elf heads on the wall to Araminata who billed the ministry to legalize muggle-hunting. Not to mention the Blacks' tendency to disown and disinherit anyone who doesn't fall in line with their standards of purity. They are, after all, "Always Pure".

So Regulus grew up wealthy in a family that considered themselves magical nobility (and probably are, in that I think they have a family Wizengamot membership). He never lacked anything, but his childhood came with expectations, more so after Sirius left.

I've seen many write Walburga and Orion as abusive, but I don't think they cursed their children. I don't think they were great parents, but I truly believe they never raised a wand (or hand) against one of their sons. What I think they did, was heft some impossible standards on their sons.

Sirius is the eldest, the heir, therefore as children, he would've carried most of these expectations. Sirius would be the one Walburga and Orion dotted after. Kreature says Sirius leaving broke Waburga's heart and I honestly believe it to be true. I think Sirius was Walburga's favorite. The eldest, the brightest, the cleverest, the most handsome. The brightest star in the night sky.

Regulus, as a child, would always come second. He would see his brother cause havoc and get all their parents' attention, so, in his bid to get attention too, he did the opposite of Sirius. If Sirius got attention for being a rebel, Regulus would follow each and every standard their parents put down to the latter. This is something you see in many families, each sibling wants to have their own "niche" so they tend to do the opposite of the sibling that came before them. And that's exactly what we see with Regulus. Sirius was the rebel, so Regulus became the dutiful, obedient perfect pure-blood son his mother wanted to win her affection and differentiate himself from Sirius.

These comparisons between them Sirius mentioned, they probably went both ways. Walburga reminded Sirius of how dutiful and reliable Regulus is and "Why can't you be more like your brother," but Regulus heard the exact same sentence. "Why can't you be as witty/talented as you're brother".

And after Sirius left, I think these comparisons got worse. I think Walburga and Orion talked about Sirius constantly after he left.

I believe Sirius and Regulus were actually close as young children and started growing apart once Sirius started school. Sirius being sorted into Gryffindor was a new point of tension in the home. The constant comparisons they both heard to each other made resentment grow and after Sirius left, Regulus couldn't speak to his parents without hearing "Oh, Sirius would say this" and "Sirius would think that" I think that resentment and bitterness got worse. So, he did what he always did to differentiate himself from Sirius — be the perfect Slytherin pure-blood.

I think this helped his decision to join the Death Eaters. Not the only factor, mind you, I don't think it's Sirius' fault Regulus joined the Death Eaters, it was still Regulus' decision. But I think the situation at home after Sirius left factored into it.

Who was Regulus as a person?

Now I want to talk a little bit more about Regulus' personality before covering his untimely end everyone is familiar with.

It was a pompous little sign, neatly lettered by hand the sort of thing that Percy Weasley might have stuck on his bedroom door. Do Not Enter Without the Express Permission of Regulus Arcturus Black

(DH, 163)

They moved over the threshold together, gazing around. Regulus’s bedroom was slightly smaller than Sirius’s, though it had the same sense of former grandeur. Whereas Sirius had sought to advertise his diffidence from the rest of the family, Regulus had striven to emphasize the opposite. The Slytherin colors of emerald and silver were everywhere, draping the bead, the walls, and the windows. The Black family crest was painstakingly painted over the bed, along with its motto, TOUJOURS PUR. Beneath this was a collection of yellow newspaper cuttings, all stuck together to make a ragged collage. Hermione crossed the room to examine them. “They’re all about Voldemort,” she said. “Regulus seems to have been a fan for a few years before he joined the Death Eaters . . . ” A little puff of dust rose from the bedcovers as she sat down to read the clippings. Harry, meanwhile, had noticed another photograph: a Hogwarts Quidditch team was smiling and waving out of the frame. He moved closer and saw the snakes emblazoned on their chests: Slytherins. Regulus was instantly recognizable as the boy sitting in the middle of the front row: He had the same dark hair and slightly haughty look of his brother, though he was smaller, slighter, and rather less handsome than Sirius had been. “He played Seeker,” said Harry.

(DH, 164)

I believe you can learn a lot about a person from their living space. Regulus' (and Sirius') bedrooms remained unchanged by their parents from the moment they left them. As Regulus died when he was 18 or 19 the room is frozen as it was when it served him. So, what does Regulus' bedroom tell us about him?

Harry refers to the sign on the door as something pompous, and written in a nice handwriting. I believe the sign was put up when Regulus was younger, specifically against Sirius. It's one of these signs children put on their doors specifically against their annoying siblings who steal their stuff or rummage through it. And even after they grew out of it, after Sirius left, Regulus kept the sign up. I think he couldn't really muster to put it away even once Sirius wasn't around to poke into his room anymore.

As I mentioned above, Regulus tried to be the opposite of Sirius and decorated his room accordingly. The most Slytherin pure-blood child of Hosue Black there could be. The Hogwarts memorabilia is some of that perfect Slytherin son image, but it's also really sad. It's a reminder of just how young Regulus was when he died. Sure, he would've probably kept a lot of it as an adult, but it's unlikely he would've displayed Slytherin banners and pictures of the Quidditch team in the same way long after school was over. But Regulus graduated a year before his death, he didn't have time to grow up and grow away from his school experiences. So his room, like him, is stuck at 19.

The Black family crest and motto painted above the bed is another extra mile to show Regulus' dedication to being the perfect son, the perfect child his mother wanted. I headcanon this was painted after Sirus left. A sort of sign to say that Regulus wouldn't leave. That he cares about his family.

Harry also mentioned Regulus was a Seeker on the Slytherin Quidditch team, according to his seating in the photo. It doesn't tell us much more about Regulus, I think it's just more of him trying to please his parents. That and I think he genuinely liked Quidditch, which is a fun little tidbit.

Now, we don't know much about Regulus at school, but I'd say he was a good student. He wasn't as naturally talented and gifted as Sirius, but Regulus knew to work his ass off. The neat handwriting on the door sign is probably his, I bet he had really organized notes in school that everyone wanted to copy. Regulus as the second best to Sirius, would be more of a hard worker than Sirius in general and strive for perfection in his school work out of his desire for attention and recognition from his parents.

Now, let's talk about the newspaper clippings elephant in the room...

Regulus the Death Eater

Sirius said his parents thought Voldemort had the right idea about muggles and muggleborns, and it's clear Regulus agreed with them. Regulus was a Voldemort fanboy before he became a Death Eater, yes, the circumstances he grew up with and his resentment towards Sirius were part of it, but it was a choice he made. He thought it was a good idea, he thought muggles and muggleborns should know their place. I think there are a lot of parallels between Regulus Black and Draco Malfoy, especially when Kreature talks about how Regulus was at first as a Death Eater:

“Master Sirius ran away, good riddance, for he was a bad boy and broke my Mistress’s heart with his lawless ways. But Master Regulus had proper order; he knew what was due to the name of Black and the dignity of his pure blood. For years he talked of the Dark Lord, who was going to bring the wizards out of hiding to rule the Muggles and the Muggle-borns . . . and when he was sixteen years old, Master Regulus joined the Dark Lord. So proud, so proud, so happy to serve . . . And one day, a year after he joined, Master Regulus came down to the kitchen to see Kreacher. Master Regulus always liked Kreacher. And Master Regulus said . . . he said . . . ” The old elf rocked faster than ever. “. . . he said that the Dark Lord required an elf.” […] “Oh yes,” moaned Kreacher. “And Master Regulus had volunteered Kreacher. It was an honor, said Master Regulus, an honor for him and for Kreacher, who must be sure to do whatever the Dark Lord ordered him to do . . . and then to c-come home.” Kreacher rocked still faster, his breath coming in sobs.

(DH, 168-169)

Like Draco, Regulus was proud to be a Death Eater, excited to do something against the "filthy mudbloods" plaguing their society. He considered helping Voldemort an honor. A good thing. Same as how Draco talks about it at first. But like we see with Draco in book 6, that it became too much for him, that he was having mental breakdowns in the toilet with Myrtle, I think Regulus experienced something similar.

He grew up spoiled, well-treated, well-mannered. He wasn't raised a soldier, a killer. I don't think Regulus had it in him, same as Draco. He couldn't bear to torture and kill.

Regulus, Kreature, and Empathy

The other interesting note in the above quotes is "Master Regulus always liked Kreacher". I find this adorable and jarring. We see how Sirius treats Kreature, he doesn't treat him as an equal being, he treats him like a slave, like a house-elf. Sirius does it because that's how he was raised to see house-elves, even the Weasleys think of house-elves in this way. It's a societal thing. But Regulus doesn't.

Regulus is kind to Kreature, and cares about him, likes him. It's kind of insane for a blood-purist Death Eater to show affection for a house-elf, especially the kind of affection in which Regulus chose to die instead of torturing his elf (his choice to die had other factors in it, and I'll get to it later). It's just, I don't know, the dynamic Regulus and Kreature had is really precious to me, okay?

Like, the fact it could happen goes to show how compassionate Regulus was even with his bigoted views and choice to become a Death Eater. Sirius calls Regulus "soft" and I think he is 100% right. Regulus was the "softer" and more empathetic of the two brothers. That softness doesn't mean he didn't think muggles and muggleborns are lesser and chose to become a Death Eater on his own accord. But that empathy is what probably made him uncomfortable among Death Eaters and get cold feet once he saw what was going on inside.

I imagine Kreature and Regulus were friendly for years. Kreature has served the Hosue of Black for a good while, which means he likely raised Regulus and Sirius. I think he helped with Regulus more than with Sirius, just because of how they reacted to him differently. Also, Waburga and Orion probably had less attention to give to Regulus when he was just born as Sirius was still really young then (a year or a year and a half old), so their attention would be more divided and Kreature would help more. I headcanon when Regulus was a young child Kreature would, like, sneak him extra desert and such and a young Sirius would complain he's not getting any.

How do we know what happened to him?

“Was he killed by an Auror?” Harry asked tentatively. “Oh no,” said Sirius. “No, he was murdered by Voldemort. Or on Voldemort’s orders, more likely, I doubt Regulus was ever important enough to be killed by Voldemort in person. From what I found out after he died, he got in so far, then panicked about what he was being asked to do and tried to back out. Well, you don’t just hand in your resignation to Voldemort. It’s a lifetime of service or death.”

(OotP, 112)

Now, what's interesting about this quote is how Sirius found this out. Why would he know that's what happened? Who could he have spoken to that would've known to tell him this?

Voldemort killing traitors is known, and many other characters mention it, but who would know Regulus turned traitor?

Other Death Eaters. Specifically, highly valued Death Eaters that are related to Regulus, like Bellatrix, who happened to be in Azkaban with Sirius.

I believe Sirius "found out" from Bella or other Death Eaters in a neighboring cell who told him that's what happened. I just don't really see any other way he'd come to this conclusion on his own. It's either that or wishful thinking on Sirius' part.

I think the inner circle Death Eaters were told Regulus was killed for treachery but nothing beyond that. I didn't really write about how I think the Dark Mark works, but I think it allows Voldemort to magically know when a Death Eater dies (and a bit more). I don't think he knew how Regulus died, just that he did. But Sirius mentioned he knew Regulus betrayed Voldemort, it means someone had to know. It means Voldemort likely knew Regulus was a traitor and told some of his Death Eaters. The same ones Sirius was in Azkaban with.

Regulus' betrayal and Death

“So what happened when you got back?” Harry asked. “What did Regulus say when you told him what happened?” “Master Regulus was very worried, very worried,” croaked Kreacher. “Master Regulus told Kreacher to stay hidden and not to leave the house. And then . . . it was a little while later . . . Master Regulus came to find Kreacher in his cupboard one night, and Master Regulus was strange, not as he usually was, disturbed in his mind, Kreacher could tell . . . and he asked Kreacher to take him to the cave, the cave where Kreacher had gone with the Dark Lord. . . . “ […] “And he made you drink the poison?” said Harry, disgusted. But Kreacher shook his head and wept. Hermione’s hands leaped to her mouth: She seemed to have understood something. “M—Master Regulus took from his pocket a locket like the one the Dark Lord had,” said Kreacher, tears pouring down either side of his snoutlike nose. “And he told Kreacher to take it and, when the basin was empty, to switch the lockets . . . ” Kreacher’s sobs came in great rasps now; Harry had to concentrate hard to understand him. “And he order—Kreacher to leave—without him. And he told Kreacher—to go home—and never to tell my Mistress—what he had done—but to destroy— the first locket. And he drank—all the potion—and Kreacher swapped the lockets—and watched . . . as Master Regulus . . . was dragged beneath the water. . . and . . . “

(DH, 171)

To the Dark Lord I know I will be dead long before you read this but I want you to know that it was I who discovered your secret. I have stolen the real Horcrux and intend to destroy it as soon as I can. I face death in the hope that when you meet your match, you will be mortal once more. R.A.B.

(HBP, 609)

So, there are a few things to talk about here:

1. Why did Regulus choose to betray Voldemort when he did? What changed?

As I mentioned above, I think Regulus was always empathetic, just not towards muggleborns (at least until he saw torture first-hand perhaps?), but he was towards Kreature. That worry over Kreature, that's the first big seed of doubt about Voldemort. Regulus cares a lot about Kreature and he's clearly clever. He's smart enough to realise Voldemort must think Kreature is dead so it'll be better if he didn't see Kreature, hence why he told the elf not to leave the house.

I think seeing Keature in a state after he was in the cave is what really caused the shift in how Regulus thinks about Voldemort. I think there were doubts before, I don't think Regulus was ever on board with being the one to torture and murder, he doesn't strike me like the sort, but as long as he didn't really need to partake and it was only "filthy mudbloods" he could kinda excuse it to himself. And whenever a pure-blood was killed or tortured (the first war killed more pure-bloods than muggleborns) he could excuse that too, "they were against us, after all". But then Kreature was hurt too, it was the final nail for Regulus. That's what he couldn't excuse to himself as "justified" anymore.

So Regulus continues being a Death Eater, but he is suspicious, he doesn't trust Voldemort's goals are what he always promised them, and he is uncertain about the means being justified anymore. He is unsure if he is willing to go as far as Voldemort is. So he watches, and study, and waits for his chance.

And that chance came when he found out about the Horcruxes.

After Regulus finds out about the Horcruxes Kreature describes him as "disturbed in the mind" and "strange", it's clear the something rattled him. A lot.

I think finding out Voldemort made a Horcrux pushed Regulus' betrayal to happen. Like, I think Horcruxes are very taboo magic, even among wizards who practice the dark arts. As I mentioned in the past, you need to essentially kill yourself to make a Horcrux. I think messing with your life and soul is considered perverse and twisted even for dark wizards, and Horcruxes even more so. I mean, I think it's uncomfortable to learn you swore your allegiance to someone who's willing to kill himself to gain immortality. It means that someone would stop at nothing to achieve their wishes.

And Regulus is already disenchanted with how far Voldemort is willing to go for goals he isn't even certain of anymore, and then he discovers the Horcrux. A magical item that says that as far as Voldemort went with the war, he could go further, because he is a man who'd stop at nothing, not even self-mutilation is too high a tool for him. That is frightening. Following the orders of someone like that, someone who doesn't care for you and is never going to say "maybe this is too far" is terrifying. The idea of someone like that ruling a government is even worse... no wonder Regulus turned traitor the moment he learned about the Horcrux...

So I think finding out about the Horcrux is why Regulus decided to turn on Voldemort and destroy the Horcrux.

As you can tell, his opinions on muggles or muggleborns aren't the main factor I believe changed Regulus' mind. The means, and how far Voldemort was willing to go is what mostly caused the change of heart. I think Regulus had too much heart for it, even if he thought muggles and muggleborns lesser, he took no sadistic joy in others' pain the way some Death Eaters do. And seeing pure-bloods like him could be hurt in the same way (the Order were mostly pure-bloods), I think was especially abhorrent to him.

2. Why did Regulus choose death?

Regulus chose to drink the potion because he wanted to spare Kreature. This is the same kindness and empathy that I've already discussed, but he could've ordered Kreature to take him back home, nothing stopped him from doing that... and Kreature would've, happily so. So why didn't he?

In the letter Regulus outright said he'd be dead by the time Voldemort reads it, he went into the cave with the full intention to die, he never planned to leave. Kinda like how Harry walked into the forest in Deathley Hallows... but why? Why did he choose death?

I think Regulus chose to die because he knew he wouldn't be able to hid his treachery from Voldemort. I mentioned already I believe Voldemort told his inner circle Death Eaters that Regulus turned traitor and died for it. Voldemort knowing Regulus is a traitor makes Regulus' decision to die make more sense.

The phrase "I want you to know it was I", makes me think Voldemort suspected someone had learned of his Horcruxes but didn't know who. Maybe Voldemort suspected there was a traitor who knew about the Horcruxes, and after Regulus died Voldemort investigated after the fact and figured it was Regulus that turned traitor. Maybe he even checked on the cave and saw Regulus was dead there, so he didn't bother to check on the Horcrux. I don't think he would've expected Kreature to have been there too, otherwise, he'd see no reason for Regulus to be dead. Because for Voldemort, it wouldn't make sense to allow yourself to die like that, he wouldn't really understand why anyone would choose to die if they had the choice.

So Regulus even kept the secret of the Horcrux being taken at all by his death.

Additionally, Regulus chose to die and take out the Horcrux while doing it to avoid being tortured and killed by Voldemort and the Death Eaters. By dying, he also protected his family from being hunted down to try and locate him. He died to protect himself and everyone he cared about from the treatment of Death Eater traitors. Which we know is not pleasant...

3. How did Regulus find out about the Horcruxes?

This is something I'm less sure of and is foraying into heavier speculation. The only hint we really get is: "I want you to know that it was I who discovered your secret" from his letter, but what exactly does this mean?

Well, Kreature told Regulus everything he saw. He told him a locket was placed in a cave filled with magical protections. Kreature's information about the locket is probably how Regulus made/bought the replica. But how from "well protected magical item" Regulus reached the conclusion that it's a Horcrux? How did he discover the secret?

I don't know how he was discovered, as for the Horcrux, I have a guess.

Regulus said he discovered the secret, I think what he did was piecing the puzzle together not unlike Dumbledore. He knew from Kreature that Voldemort had an item he guards very securely, he might've heard from Bellatrix that Voldemort is immortal since I'm pretty confident she was told what the cup in her vault is. And I think Regulus, as a member of the Noble and Most Ancient House of Black, and a clever enough dark wizard, could trace a book about Horcruxes and figure out that's likely what the locket is.

Some random headcanons

1. I think Regulus could be just as much of a little shit as Sirius. I mean, there's a certain edge to how he words his note. I like to think, that when they were young, before Hogwarts, they'd pull pranks together in balls or other stuffy functions and get in trouble together.

2. I have little to no basis for this headcanon, but I'd like to think the painting of the Black family crest and motto above Regulus' bed was painted by Rregulus. I mean, he can do nice calligraphy on the sign on his door, I see no reason he couldn't also paint.

3. And finally, to a kinda sad headcanon, Harry actually saw Regulus in the cave:

the wandlight had slid over a fresh patch of water and showed him, this time, a dead man lying faceup inches beneath the surface, his open eyes misted as though with cobwebs, his hair and his robes swirling around him like smoke.

(HBP, 565)

I assume most of the corpses are muggles, and most of them are actually described as worse for wear than the one robe-wearing wizard corpse Harry describes above. For these reasons, I believe this corpse is Regulus. It's a sad thought, but it crossed my mind when I read this passage in my recent HBP reread.