Regulus Black & Sirius Black FanFiction

The Things We Don’t Say

The Things We Don’t Say

M/M
G
Updated
13.04.2025
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, Marlene McKinnon, Severus Snape, Regulus Black & Sirius Black, Evan Rosier, Lily Evans,
My Kingdom For A Kiss Upon His Shoulder

My Kingdom For A Kiss Upon His Shoulder

F/M
Gen
M/M
Other
G
Updated
13.04.2025
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, Tom Riddle | Voldemort, Regulus Black & Sirius Black,
Tags
I Can't Believe I Wrote This Angst and Humor No Smut Black Family Drama (Harry Potter) French Regulus Black Ballroom Dancing French Black Family (Harry Potter) Regulus Black & Barty Crouch Jr. & Evan Rosier Friendship Minor Barty Crouch Jr./Evan Rosier tragedy that are the black brothers Royal Prince Regulus Black Royal Prince Sirius Black
Regulus Black is deemed the crown prince after his wild older brother runs away. But all of a sudden a mysterious Count wanders into his life and suddenly Regulus isn’t sure he knows what he wants anymore.
Pretty enough to bite

Pretty enough to bite

M/M
G
Updated
13.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Regulus Black, Sirius Black/Remus Lupin, Remus Lupin, Sirius Black, James Potter, Regulus Black & Sirius Black
Tags
Alternate Universe - Modern Setting Implied Sexual Content Implied/Referenced Homophobia Regulus Black is a Little Shit Self-Discovery Modern Marauders (Harry Potter) brief mention of Jily
James Potter goes to a club with his friends and stumbles upon a pretty stranger that makes him forget any and all coherent thought
Savior Complex

Savior Complex

M/M
G
Updated
13.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Remus Lupin, Regulus Black & Sirius Black, Barty Crouch Jr.
Tags
Heavy Angst Blood and Injury Angst with a Happy Ending Fluff and Humor Emotional Hurt/Comfort Angst and Hurt/Comfort Minor Character Death Car Accidents Caretaking Regulus Black & Sirius Black Have a Good Relationship Chaotic Barty Crouch Jr. James Potter Loves Regulus Black
Even Spider-Man can't save everyone.When James witnesses a catastrophic car accident, he tries to help the victims as best he can, but without his suit, he can't use any of his powers without giving up his identity. Afterward, he grapples with his fa...
The Space Between Floors

The Space Between Floors

F/F
F/M
M/M
G
Updated
13.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Regulus Black, Sirius Black/Remus Lupin, James Potter/Lily Evans Potter, Remus Lupin, Sirius Black, James Potter, Regulus Black & Sirius Black, Evan Rosier, Lily Evans, Barty Crouch Jr., Sirius Black & Remus Lupin & Peter Pettigrew & James Potter,
Tags
Angst Forced Proximity Regulus Black & Sirius Black Have a Good Relationship Alternate Universe - No Voldemort eventually just a little ((Thank GOD)) James Potter is a Ray of Sunshine written like a romcom James and Sirius are bestie goals the prank does not happen either James falls first and harder
When a magical disturbance at Hogwarts needs investigating, Head Boy James Potter is roped into a research project on magical creature preservation. His only problem? He’s been partnered with Regulus Black — his best mate’s brooding, sharp-tongued li...
One Last Night

One Last Night

M/M
G
Updated
13.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Regulus Black, Remus Lupin, Sirius Black, James Potter, Peter Pettigrew, Lily Evans Potter, Dorcas Meadowes, Regulus Black & Sirius Black, Evan Rosier, Barty Crouch Jr., Pandora Lovegood,
Tags
Angst Hurt No Comfort The Author Regrets Everything Author Is Sleep Deprived
This only exists because of something.138This is the specific video https://www.tiktok.com/t/ZTjd7WmL7/Thx you for letting me use it and make it into a fici have a alternative epilogue where reg survives if anybody wants me to post it 
Requiem

Requiem

Gen
G
Updated
13.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black, Harry Potter, Sirius Black, Regulus Black & Sirius Black, Sirius Black & Harry Potter
Tags
Alternate Universe - Canon Divergence Hurt/Comfort Angst and Hurt/Comfort Sirius Black Lives Regulus Black and Sirius Black Angst Song: Requiem (Dear Evan Hansen)
He buried him out of anger, not knowing he'd buried him alive. Years after the war, Sirius Black learns the truth: his younger brother, Regulus, the so-called coward, the loyal Death Eater, died trying to bring Voldemort down from the inside.
love you like i mean it (just because i can)

love you like i mean it (just because i can)

M/M
G
Updated
13.04.2025
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, Mary Macdonald (Harry Potter), Marlene McKinnon, Dorcas Meadowes, Regulus Black & Sirius Black, Evan Rosier,
Tags
Alternate Universe - Modern Setting Alternate Universe - Canon Divergence Friends to Lovers Mutual Pining Fluff and Angst Found Family Childhood Friends Happy Ending Regulus Black & Sirius Black Have a Good Relationship Trans Regulus Black Alternate Universe - Everyone Lives/Nobody Dies James Potter Loves Regulus Black
When James sends Regulus an invite to his yearly Spain trip, Regulus actually accepts. Why not make the summer before his final year of school actually mean something?
Harrie’s Story - Year I

Harrie’s Story - Year I

F/F
F/M
M/M
Multi
G
Updated
13.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black, James Potter/Lily Evans Potter, Remus Lupin, Sirius Black, James Potter, Lily Evans Potter, Mary Macdonald (Harry Potter), Marlene McKinnon, Severus Snape, Lucius Malfoy, Kingsley Shacklebolt, Alastor "Mad-Eye" Moody,
Harrie is Voldemort’s half-Wizard, half-powerful magical creature daughter who happens to start Hogwarts at the same as The Marauders. Oh, and Voldy is trying to use her powers as a secret weapon in the first war.Incredibly slow-burn romance.Coming o...
Fathers Rage

Fathers Rage

M/M
G
Updated
13.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Regulus Black, Harry Potter, Sirius Black/Remus Lupin, Remus Lupin, Sirius Black, James Potter, Lily Evans Potter, Dolores Umbridge, Regulus Black & Sirius Black, Harry Potter & James Potter, Sirius Black & James Potter,
Tags
Torture Child Abuse Past Character Death Dolores Umbridge Being an Asshole Dolores Umbridge Bashing Centaurs Mentioned Lily Evans Potter She’s dead Past Jegulily Angry Regulus Black James and Reggie are good dads
Regulus Black reminds everyone why they are lucky he’s a good Death Eater.Remus and Sirius live with Reggie and James. Harry still has his scar.
The Heart of The Lion

The Heart of The Lion

Multi
G
Updated
13.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black, Sirius Black, James Potter, Regulus Black & Sirius Black, Barty Crouch Jr., Pandora Lovegood
Tags
Canon Compliant First Wizarding War with Voldemort (Harry Potter)
This is the story of Regulus Black
Love-40

Love-40

F/F
M/M
G
Updated
11.04.2025
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, Lily Evans Potter, Mary Macdonald (Harry Potter), Marlene McKinnon, Dorcas Meadowes, Regulus Black & Sirius Black,
Tags
Modern Era age gap Hurt/Comfort Fluff and Angst Internalized Homophobia but not really Alternate Universe - Muggle Alternate Universe - Tennis Regulus Black-centric Rivals to Lovers Regulus Black & Sirius Black Have a Good Relationship Regulus Black is a Brat
The First time Regulus Black held a tennis racket in his hands, he was four years old. Now, barely 15 years later, he is one of the most famous Tennis players worldwide, ruthless, untouchable and utterly alone. He’s never seen the point in becoming f...
Our secret tradition

Our secret tradition

G
Updated
13.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black, Sirius Black, Severus Snape, Regulus Black & Sirius Black, Regulus Black/Severus Snape
Tags
Fluff and Angst Idiots in Love First Kiss Marauders Era (Harry Potter) Regulus Black and Sirius Black Angst Regulus Black Needs a Hug Protective Sirius Black Severus Snape Has a Heart
Regulus Black only meant to defend Sirius so he could insult him himself — so why has he now caught the attention of Severus Snape?
Someone Who Loves You Wouldn't Do This.

Someone Who Loves You Wouldn't Do This.

G
Updated
13.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black, Remus Lupin, Sirius Black, James Potter, Regulus Black & Sirius Black
Tags
Angst Implied/Referenced Self-Harm Everyone Needs A Hug Hurt No Comfort I'm Sorry Marauders Era (Harry Potter) Marauders Author Is Sleep Deprived Regulus Black and Sirius Black Angst Bad Parent Walburga Black Oops Regulus Black Needs a Hug
It is the destiny of stars to collapse - Neil deGrasse Tyson After an argument Regulus wasn't meant to witness, the rift between the Black brothers only began to grow. Sirius doesn't handle it well.
Leave a Seat for Me on the Train

Leave a Seat for Me on the Train

F/M
M/M
G
Updated
13.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black, Sirius Black/Remus Lupin, Remus Lupin, Sirius Black, James Potter, Peter Pettigrew, Lily Evans Potter, Mary Macdonald (Harry Potter), Marlene McKinnon, Minerva McGonagall, Severus Snape, Lucius Malfoy,
Tags
Angst Alternate Universe - Canon Divergence Suicidal Thoughts Post-Traumatic Stress Disorder - PTSD Nightmares Implied/Referenced Child Abuse Flashbacks Abuse Marauders Era (Harry Potter) Marauders Friendship (Harry Potter) Eating Disorders Regulus Black and Sirius Black Angst
"Sirius Black did not cry that night.He watched the skull with a snake coming out of its mouth drawn on his leftarm." What would happen if Sirius Black hadn't been able to escape from Grimmauld Place and go to James Potter?What would happen if Sirius...
I found my old self in the mirror

I found my old self in the mirror

M/M
G
Updated
13.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Regulus Black, Regulus Black & Sirius Black, Pandora Lovegood, mentioned James Potter - Character, mentioned Sirius Black - Character, mentioned Walpurga Black, Mentioned Orion Black - Character, Trans Regulus Black - Character, Mentioned Remus Lupin - Character
Tags
mention of depression mention of suicidal thoughts TikTok trend I met my younger self for coffee today
Regulus comes across the TikTok Trend ,I met my younger self today for coffee, and try’s it. He realizes that he actually never got better and is still the same. Or: In the modern world Regulus deals with his trauma through writing.
【SBRB】Feel the fire

【SBRB】Feel the fire

M/M
G
Updated
13.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black, Sirius Black, Regulus Black & Sirius Black, Sirius Black/Regulus Black
Tags
车
★雷雷阴湿向预警，水煎窒息★全文1.1w+，尽情享用★Summary:Regulus·Black从小喜欢他的哥哥，但家庭的压力使他一直压抑着，终于有一天，让他找到了机会。心里的声音呼唤着自己去爬上Sirius的床。乱伦使他心理愈发扭曲，甚至在年长者快要醒来时用枕头蒙住了对方的头，那一...
Northern Sky

Northern Sky

M/M
G
Updated
13.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Regulus Black, Original Female Character(s), Original Male Character(s), Harry Potter, Sirius Black/Remus Lupin, Remus Lupin, Sirius Black, James Potter, Regulus Black & Sirius Black, Lily Evans, Regulus Black/Original Male Character(s),
Tags
Alternate Universe - Canon Divergence Hurt/Comfort Fluff and Angst Kid Fic Trans Regulus Black Regulus Black Lives Regulus Black and Sirius Black Angst lots of metaphor relating to disassociation
There’s a distinct sensation that coincides with coming back to reality. It’s much like being a child, counting the seconds as you hold your breath underwater; baiting your burning lungs, testing them before you’re forced to resurface. It’s not quite...
Lo sabía.

Lo sabía.

M/M
G
Updated
13.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Regulus Black, Sirius Black/Remus Lupin, Remus Lupin, Sirius Black, James Potter, Regulus Black & Sirius Black, Evan Rosier, Barty Crouch Jr., Pandora Lovegood, Walburga Black, Orion Black
Tags
Alternate Universe - Modern Setting Trans Male Character Alternate Universe - Muggle Regulus Black & Sirius Black Have a Good Relationship Alternate Universe - No Voldemort Trans Regulus Black Pandora Lovegood and Evan Rosier are Twins Sirius Black & James Potter Friendship Minor Pandora Lovegood/Xenophilius Lovegood Regulus Black & Pandora Lovegood Friendship Regulus Black & Barty Crouch Jr. & Evan Rosier Friendship Minor Barty Crouch Jr./Evan Rosier
Regulus siempre supo que James era su destino, lo supo desde antes de saber que era Regulus.Cuando James conoció a la curiosa hermanita de su mejor amigo, nunca creyó que sería su novio un par de años después.
The Language of Broken Things

The Language of Broken Things

F/F
F/M
M/M
G
Updated
13.04.2025
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, Dorcas Meadowes, Marlene McKinnon/Dorcas Meadowes, Frank Longbottom, Alice Longbottom, Regulus Black & Sirius Black,
Tags
Alternate Universe - Modern Setting Angst Getting Together Past Child Abuse Hurt/Comfort Post-Traumatic Stress Disorder - PTSD Fluff and Angst Implied/Referenced Child Abuse Psychological Trauma Found Family Mental Health Issues Everyone Is Gay
Regulus Black had been a silent child. He didn't know how to express himself through his voice, which had so often betrayed him, that he deemed it useless.Regulus Black had been silenced, not by himself, but by his parents. Ten years after that fatef...