Good Sibling Sirius Black FanFiction

Hate(but not quite)

Hate(but not quite)

G
Updated
13.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black, Sirius Black, Regulus Black & Sirius Black
Tags
Angst Hurt/Comfort Regulus Black and Sirius Black Angst Abusive Walburga Black Good Sibling Sirius Black Mentioned Walburga Black
Regulus Black had hated his brotherBut even through the hate, there was love.----Or..Sirius confronts his brother after Regulus took the dark mark.
Trouble Twins

Trouble Twins

G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Remus Lupin, Sirius Black, James Potter, Lily Evans Potter, Euphemia Potter, Fleamont Potter, Sirius Black & James Potter, Euphemia Potter/Fleamont Potter, Sirius Black & Remus Lupin & Peter Pettigrew & James Potter, Sirius Black & Euphemia Potter & Fleamont Potter & James Potter
Tags
Alternate Universe Alternate Universe - Muggle Sirius Black & James Potter Friendship Good Parent Euphemia Potter Good Parent Fleamont Potter Disabled Character Disabled Remus Lupin Good Sibling Sirius Black Rich Sirius Black Remus Lupin Uses a Wheelchair Rich James Potter
Muggle-AU Marauders fanfiction. Sirus and James are twins. The Potters give Sirius a great childhood. Positivity for disabled and queer characters. romantic wolfstar and jily in later chapters.
Silver and Grey

Silver and Grey

G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black, Sirius Black/Remus Lupin, Remus Lupin, Sirius Black, James Potter, Regulus Black & Sirius Black, Regulus Black & Remus Lupin, (it's not explicit but know it's there)
Tags
Alternate Universe - Canon Divergence Hurt/Comfort Emotional Hurt/Comfort Miscommunication Implied/Referenced Child Abuse ish Regulus Black and Sirius Black Angst Bad Parent Walburga Black Regulus Black Needs a Hug Werewolf Remus Lupin Warning: Fenrir Greyback Dysfunctional Black Family (Harry Potter)
When Remus goes back to school early during winter hols to transform more comfortably, he discovers that he may not be the only werewolf of his age at Hogwarts. And shockingly, the other is Regulus Black.
i don't blame you

i don't blame you

G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black, Sirius Black, Regulus Black & Sirius Black, Black Family (Harry Potter)
Tags
Marauders Era (Harry Potter) Family Issues Poetry Black Family Trauma (Harry Potter) Regulus Black Needs a Hug POV Sirius Black Sirius Black Needs a Hug Good Sibling Sirius Black
after all, what is loyaltyif it's not for you?
do patti

do patti

M/M
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Regulus Black, Original Male Character(s), Sirius Black/Remus Lupin, Remus Lupin, Sirius Black, James Potter, Regulus Black & Sirius Black, Regulus Black/Original Male Character(s)
Tags
Complicated Relationships Regulus Black and Sirius Black Angst Regulus Black Needs a Hug Traumatized Regulus Black Good Sibling Sirius Black Bad Sibling Sirius Black
this is not a fic (i wish i was talented but unfortunately not)this is a recommendation pls i hope my beloved talented ao3 users consider<3333pls i need a fanfic so bad (loosely) based on do patti (the new bollywood movie that just came out) where...
Purple stained fingers

Purple stained fingers

G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black, Sirius Black/Remus Lupin, Remus Lupin, Sirius Black, James Potter, Peter Pettigrew, Lily Evans Potter, Regulus Black & Sirius Black, Evan Rosier, Barty Crouch Jr., Pandora Lovegood, Sirius Black & James Potter,
Tags
Implied/Referenced Child Abuse Child Abuse Marauders Regulus Black & Sirius Black Have a Good Relationship Regulus Black is Bad at Feelings Regulus Black and Sirius Black Angst Regulus Black Needs a Hug Regulus Black and Sirius Black Both Run Away Abusive Walburga Black Regulus Black Deserves Better eventually Minor Sirius Black/Remus Lupin
Sirius always snuck Regulus cherries when they were younger. He would pass them under the table. Leave them hidden in Regulus' room until they could sneak them out later to snack on.Cherries were always Regulus' favourite. Cherries always left Regulu...
Hogwarts' Worst Kept Secret

Hogwarts' Worst Kept Secret

M/M
G
Updated
15.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Sirius Black/Remus Lupin, Marlene McKinnon, Dorcas Meadowes, Evan Rosier, Barty Crouch Jr., Sirius Black & James Potter, Mulciber Jr. | Severus Snape's Schoolmate, Poppy Pomfrey, Regulus Black & Barty Crouch Jr.
Tags
Blood and Injury Hurt/Comfort Tooth-Rotting Fluff Secret Relationship Light Angst Caretaking Regulus Black & Sirius Black Have a Good Relationship Fluff and Hurt/Comfort Protective Sirius Black Established Sirius Black/Remus Lupin Regulus Black and Sirius Black Both Run Away Good Regulus Black
Regulus accidentally reveals his secret (not so secret) relationship with James when he gets hit and injured with a bludger during a Quidditch game against Slytherin.
Invitation

Invitation

Gen
M/M
G
Updated
15.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black, Sirius Black/Remus Lupin, Remus Lupin, Sirius Black, Regulus Black & Sirius Black, Barty Crouch Jr., Regulus Black/Barty Crouch Jr.
Tags
Fluff Alternate Universe - Modern Setting Alternate Universe - Muggle Regulus Black & Sirius Black Have a Good Relationship Trans Regulus Black Good Sibling Sirius Black Sirius has anxiety lol no beta we die like reggie in cannon barty is a wild raccoon with rabies -Sirius Black 2023
After 11 years of estrangement, Sirius and Regulus have reconnected and now share a decently good relationship with each other.One day, Regulus invites Sirius over for an important conversation.
Don't Let Me Fall

Don't Let Me Fall

M/M
G
Updated
15.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Regulus Black, Sirius Black, James Potter, Regulus Black & Sirius Black, Barty Crouch Jr., Poppy Pomfrey
Tags
Alternate Universe - Canon Divergence Hurt/Comfort Whump Emotional Hurt/Comfort Marauders Era (Harry Potter) Hogwarts Regulus Black-centric Regulus Black Lives Gay Regulus Black Regulus Black Needs a Hug Sirius Black & James Potter Friendship POV Regulus Black
Regulus is dreading the new school year, particularly what happens when his boyfriend and brother find out what he did during the summer
Mother

Mother

G
Updated
15.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black, Sirius Black, James Potter, Regulus Black & Sirius Black, Euphemia Potter, Fleamont Potter, Sirius Black & James Potter, Walburga Black, Orion Black, Orion Black & Regulus Black & Sirius Black & Walburga Black, Sirius Black & Walburga Black, Sirius Black & Euphemia Potter,
Tags
Angst with a Happy Ending Hurt/Comfort Gay Sirius Black Abusive Parents Bad Parent Walburga Black Regulus Black and Sirius Black Both Run Away Abusive Walburga Black Abused Regulus Black Regulus Black Feels Good Sibling Sirius Black Sirius Black Angst Good Sibling Regulus Black
It was always the mother, never the mum.Sirius's mother, Walburga Black, was never a mum to him. Never, not once.
Small accident, very small

Small accident, very small

G
Updated
15.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black, Sirius Black/Remus Lupin, Remus Lupin, Sirius Black, James Potter, Peter Pettigrew, Minerva McGonagall, Dorcas Meadowes, Regulus Black & Sirius Black, Evan Rosier, Barty Crouch Jr., Pandora Lovegood,
Tags
Angst Brotherly Love Hurt/Comfort Implied/Referenced Child Abuse Regulus Black is Bad at Feelings Age Regression/De-Aging Regulus Black Needs a Hug Protective Sirius Black Regulus Black Deserves Better Sirius Black Needs a Hug Abused Regulus Black Regulus Black Has Issues
"I'm you're favorite person?" Sirius asked through tears.   "Yes you are," Reggie nodded solemnly "and you always will be, I promise," Sirius bites his lip, he doesn't want to cry in front of the boy but it hurts, it hurts a lot, because in ten...
Is it better to speak or to die ?

Is it better to speak or to die ?

Gen
G
Updated
15.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black, Sirius Black, Regulus Black & Sirius Black
Tags
Angst Character Study Not Beta Read Canonical Character Death Hurt No Comfort Kinda Regulus Black-centric Regulus Black Dies The Author Regrets Nothing Morally Ambiguous Character Regulus Black Needs a Hug english is not my first language
Maybe, of he had spoken then none of this would've happened. Or regulus goes to the cave and have sad emo boy hoursenglish is not my first language and im posting this at like midnight on a school night LMAO
The story of one Regulus Black

The story of one Regulus Black

M/M
G
Updated
15.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Regulus Black, Sirius Black, James Potter, Euphemia Potter, Walburga Black, Orion Black
Tags
Fluff Coming Out Trans Regulus Black Gay Regulus Black Good Sibling Sirius Black Fidelius Charm (Harry Potter) Transitioning
Regulus always knew who he was, and his first day at school caused the world to see who he was tooOrRegulus Black realized he was a boy as a young kid, and after having no other choice, his family had to make damn sure that people saw him as one.
Appearances of the Brother

Appearances of the Brother

M/M
G
Updated
15.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Regulus Black, Sirius Black/Remus Lupin, Remus Lupin, Sirius Black, James Potter, Dorcas Meadowes, Regulus Black & Sirius Black, Evan Rosier, Barty Crouch Jr., Pandora Lovegood, Sirius Black & James Potter,
Tags
Hurt/Comfort Kind Of Band Fic How Do I Tag Bad Parent Walburga Black Background Relationships Modern Marauders (Harry Potter) Singer Regulus Black Good Sibling Sirius Black no beta we drown like regulus slythein skittles band regulus is a mix of conan gray and taylor
Sirius gets an invitation to Regulus concert. This happens only months after they got back in contact with each other. How does this small thing set off a series of events that bring the brothers back together and also blossom new friendships and rel...
Dramatic and Petty a key to A successful Reunion

Dramatic and Petty a key to A successful Reunion

G
Updated
15.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black, Sirius Black/Remus Lupin, Remus Lupin, Sirius Black, James Potter, Peter Pettigrew, Lily Evans Potter, Regulus Black & Sirius Black, Sirius Black & James Potter, Remus Lupin & Lily Evans Potter, Sirius Black & Remus Lupin & Peter Pettigrew & James Potter, Regulus Black/James Potter/Lily Evans Potter,
Tags
Fluff Fluff and Angst Light Angst Regulus Black Lives Regulus Black is a Little Shit Remus Lupin & Lily Evans Potter Friendship Regulus Black and Sirius Black Both Run Away James Potter Lives Post-Sirius Black's Prank on Severus Snape Lily Evans Potter Lives James Potter Ships Remus Lupin/Sirius Black Good Sibling Sirius Black
Regulus Black is a Protective Little GremlinSpecially for his Brother So when Remus Lupin showed up 6 years after no contact,Regulus devised up a very Petty Plan
Night Rain

Night Rain

G
Updated
15.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Regulus Black, Sirius Black/Remus Lupin, Remus Lupin, Sirius Black, James Potter, Peter Pettigrew, Euphemia Potter, Fleamont Potter, Sirius Black & James Potter, Euphemia Potter/Fleamont Potter, Sirius Black & Remus Lupin & Peter Pettigrew & James Potter,
Tags
Fluff Pregnancy Siblings Family Fluff Hurt/Comfort Emotional Hurt/Comfort Fluff and Angst Domestic Fluff Hopeful Ending Sirius Black & James Potter Friendship Family Feels Good Parent Euphemia Potter
James carefully opens the envelope,he reads silently then he stands up, jaws dropping as he reads"Mate? What's wrong?" Sirius started to get worried"I'm…" James swallows, tears started beading on his eyelids"Mate? Everything okay? Why are you crying...
Story of Us: Next Chapter

Story of Us: Next Chapter

G
Updated
15.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Regulus Black, Sirius Black/Remus Lupin, Remus Lupin, Sirius Black, James Potter, Lily Evans Potter, Mary Macdonald (Harry Potter), Marlene McKinnon, Dorcas Meadowes, Narcissa Black Malfoy, Marlene McKinnon/Dorcas Meadowes,
Tags
Fluff Slow Burn Brotherly Love Eventual Romance Established Relationship Implied/Referenced Child Abuse Light Angst Friendship Marauders Era (Harry Potter) Alternate Universe - Muggle Marauders Friendship (Harry Potter) Regulus Black & Sirius Black Have a Good Relationship
so what if Jegulus Muggle AU where Reggie is a Fanfiction author and James is content creator in the fandomReg scrolls through his FYP and saw James made a content using one of the angstiest scenes in Regulus' works ...With Wolfstar, MaryLily, RoseKi...
Our Stars and Scars

Our Stars and Scars

G
Updated
15.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Regulus Black, Sirius Black/Remus Lupin, Remus Lupin, Sirius Black, James Potter, Lily Evans Potter, Lyall Lupin, Regulus Black & Sirius Black, Euphemia Potter, Fleamont Potter, Sirius Black & Remus Lupin,
Tags
Hurt/Comfort Emotional Hurt/Comfort Angst and Hurt/Comfort Domestic Fluff Implied/Referenced Child Abuse Child Abuse Family Feels Abusive Walburga Black Post-Sirius Black's Prank on Severus Snape Good Parent Euphemia Potter Good Parent Fleamont Potter Bad Parent Orion Black
"I'm glad you found me" he mumbles" I told I'd get you" When Sirius ran away from Old Grimmauld ,lost in nowhere, he calls Remus ...
The Lucky One

The Lucky One

F/F
G
Updated
12.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Original Characters, Regulus Black/James Potter, Regulus Black, Sirius Black/Remus Lupin, Remus Lupin, Sirius Black, James Potter, Peter Pettigrew, Lily Evans Potter, Mary Macdonald (Harry Potter), Marlene McKinnon, Dorcas Meadowes,
Tags
Alternate Universe - Modern Setting Friends to Lovers Coming of Age Alternate Universe - High School Queer Youth Remus Lupin & Lily Evans Potter Friendship Gay Regulus Black Modern Marauders (Harry Potter) Lesbian Lily Evans Potter POV Mary Macdonald (Harry Potter) Author is a Taylor Swift Fan Minor Sirius Black/Mary Macdonald
Mary Macdonald has been told she was the same thing all her life: Pretty. But was that all she was? She never really felt like she could fit in the box everyone expected her to be in. She was always just too much, whether it was too loud, too outgoin...
Parallels

Parallels

F/F
M/M
G
Updated
17.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Regulus Black, Remus Lupin, Sirius Black, James Potter, Peter Pettigrew, Marlene McKinnon, Dorcas Meadowes, Regulus Black & Sirius Black, Evan Rosier, Lily Evans, Euphemia Potter,
Tags
Fluff Angst Slow Burn Not Canon Compliant Past Child Abuse Angst with a Happy Ending Hurt/Comfort Fluff and Angst Implied/Referenced Child Abuse Happy Ending Alternate Universe Alternate Universe - No Voldemort
Regulus wakes up in James Potter's bed with no memory of how he got there or why James was suddenly being so nice to him.He soon finds out that's not the only thing that's wrong. Regulus is suddenly in a world where he was sorted into Gryffindor in h...