Genderfluid Sirius Black FanFiction

Blue Drinks and Red Couches

Blue Drinks and Red Couches

M/M
G
Updated
13.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Remus Lupin, Sirius Black, James Potter, Sirius Black/James Potter
Tags
Genderfluid Sirius Black idiots to lovers first kiss trope Transmasc James Potter Transfeminine Sirius Black Nobody parities like the Gryffindors I still can’t tag why is this so difficult they’re in love they are just both idiots Sirius black can not deal with men in cropped tops They laugh about Remus and his secret lover poor Remus but he probably dosent care because he’s probably getting freaky none of this comes up in the fic I just think its good backround knowledge
Alternative title: Sirius Black is an adorable idiot, but an idiot nonethelessJames Potter is perfect. And if anyone says otherwise to Sirius they are wrong. Because to Sirius he is like the sun.Or the one which pretty much Sirius just spends the ent...
All the small things

All the small things

F/F
M/M
G
Updated
13.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Sirius Black/Remus Lupin, Marlene McKinnon/Dorcas Meadowes, Regulus Black & Sirius Black, Barty Crouch Jr./Evan Rosier, Regulus Black & Barty Crouch Jr. & Pandora Lovegood & Dorcas Meadowes & Evan Rosier, Mary Macdonald/Lily Evans Potter, Sirius Black & Remus Lupin & Peter Pettigrew & James Potter
Tags
Fluff Modern Era Angst Band Fic Marauders Era (Harry Potter) Everyone Is Gay Trans Regulus Black Pansexual James Potter Regulus Black and Sirius Black Angst Regulus Black Needs a Hug POV Alternating Desi James Potter
A marauders band au including The Marauders (James , Remus , Sirius) , The Valkyries (Mary , lily , Marlene) and Jupiter's Moons (Reg , Barty , Evan , Dorcas) play a festival together.
Please Come Back (But I Never Left?)

Please Come Back (But I Never Left?)

F/F
F/M
M/M
Multi
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, Lily Evans Potter, Mary Macdonald (Harry Potter), Marlene McKinnon, Dorcas Meadowes, Lucius Malfoy,
Tags
Past Child Abuse Sad Not Beta Read The Author Regrets Everything I'm Sorry Alternate Universe - Muggle How Do I Tag Author Is Sleep Deprived I Don't Even Know Trans Regulus Black Pandora Lovegood and Evan Rosier are Twins Weird Plot Shit
... Evan looked at the boy laying in bed beside him. He wanted him. He couldn't. He shouldn't. He wanted him, but it was wrong. Their whole relationship was wrong. But God, Evan still wanted him.Was that so wrong? ...
☆Starman☆

☆Starman☆

F/F
M/M
G
Updated
11.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black, Remus Lupin, Sirius Black, James Potter, Peter Pettigrew, Lily Evans Potter, Mary Macdonald (Harry Potter), Marlene McKinnon, Evan Rosier, Gilderoy Lockhart, Barty Crouch Jr., Pandora Lovegood,
Tags
Fluff How Do I Tag Underage Smoking Chaotic Barty Crouch Jr. Remus Lupin & Lily Evans Potter Friendship Gay Regulus Black Regulus Black Needs a Hug Werewolf Remus Lupin Pansexual Remus Lupin Genderfluid Sirius Black Remus Lupin also needs a hug Regulus and Remus POV
♫⋆There’s a Starman waiting in the sky⋆♫Regulus Black has always waited for something; someone. He’s always had this empty place inside of him, he just doesn’t know what will fill it. Regulus always thought the people to fill this empty space in woul...
In His Eyes (Jegulus)

In His Eyes (Jegulus)

Multi
G
Updated
14.04.2025
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, Draco Malfoy, Lucius Malfoy, Narcissa Black Malfoy, Regulus Black & Sirius Black, Evan Rosier,
Tags
Gender Dysphoria Self-Harm Implied/Referenced Self-Harm References to Drugs Past Abuse Kissing Drug Use Gay Marauders POV Remus Lupin Alternate Universe - Muggle Everyone Is Gay
I suck at summariesBarty's a fucking cunt (At the start) , Bartylus is out of pure lust, Regulus is only willing because it means he'll have drugs and a place to stay, but life isnt that bad...A year later, everything changes. The police come. They t...
Dirty Cash, I want you, (dirty cash, I need you)

Dirty Cash, I want you, (dirty cash, I need you)

F/F
M/M
G
Updated
11.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black, Sirius Black/Remus Lupin, Remus Lupin, Sirius Black, Marlene McKinnon, Regulus Black & Sirius Black, Sirius Black & Marlene McKinnon, Regulus Black/Marlene McKinnon, Regulus Black & Marlene McKinnon
Tags
Fluff Angst Getting Together Lesbian Marlene McKinnon Trans Regulus Black Song: Casual (Chappell Roan) Pet Names Bisexual Regulus Black POV Regulus Black French Regulus Black Tattoos Genderfluid Sirius Black
Regina gets a tattoo from her brothers hot friend.
pretty like the wind

pretty like the wind

M/M
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Sirius Black/Remus Lupin, Remus Lupin, Sirius Black
Tags
Angst Angst with a Happy Ending Miscommunication Domestic Fluff Cuddling & Snuggling Winter Genderfluid Sirius Black Breaking Up & Making Up Meeting the Parents Phone Calls & Telephones She/Her Pronouns for Sirius Black
The person you are calling is currently unavailable. Please leave your message after the tone. Press the hash key when finished, or hang up to end the call.“Hey Remus, it’s me. I-um.. I know I’m not supposed to be calling right now but I’m not doing...
Full Honesty

Full Honesty

Gen
Multi
Other
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Original Male Character(s), Sirius Black/Remus Lupin, Remus Lupin, Sirius Black, James Potter, Peter Pettigrew, Lily Evans Potter
Tags
Friends to Lovers Mutual Pining Love Confessions Getting Together Alternate Universe - College/University Idiots in Love Chronic Illness Kissing Holding Hands Bisexual Remus Lupin Not Actually Unrequited Love Remus Lupin & Lily Evans Potter Friendship
Remus stands in the doorway of the living room, a drink in his hand, eyes scanning the room, people drinking, dancing, talking. In the middle of the room is where Remus finds her, Remus’ eyes automatically stop, unable to look anywhere else now. Siri...
Fade into you

Fade into you

M/M
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Sirius Black/Remus Lupin, Remus Lupin, Sirius Black
Tags
Fluff Hurt/Comfort Established Relationship Comfort Winter Genderfluid Sirius Black Phone Calls & Telephones
And there he is.Bathed in gold from what she now knows is the tall lamp in his bedroom that they got last summer from his grandmother’s house, in a jumper that Sirius got for him from that small business down the street from their flat, and that smil...
Against my pillow

Against my pillow

M/M
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Sirius Black/Remus Lupin, Remus Lupin, Sirius Black
Tags
Fluff Tooth-Rotting Fluff Established Relationship Domestic Fluff Sleepy Cuddles Sickfic Genderfluid Sirius Black
Remus chuckled, shaking his head as he leaned closer to place a kiss on Sirius’ forehead. Sirius almost melted into it before realising that it was more a press of lips than an actual kiss.Remus pulled back, the worry, now, taking over his expression...
Beautiful 💗

Beautiful 💗

F/F
F/M
M/M
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling Heathers: The Musical - Murphy & O'Keefe
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, Marlene McKinnon/Dorcas Meadowes,
Tags
Trans Regulus Black Pansexual James Potter Trans Remus Lupin Genderfluid Sirius Black Pandora Lovegood and Evan Rosier are Related
Regulus dark mysterious new kid, his siblings really popular James a nerd who used to like lily that moved on and end up be friending the trio!
So this is love?

So this is love?

M/M
G
Updated
14.04.2025
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, Marlene McKinnon/Dorcas Meadowes,
Tags
Alternate Universe - Modern Setting Other Additional Tags to Be Added Implied/Referenced Child Abuse Not Beta Read I'm Bad At Tagging Gay Sirius Black Alternate Universe - Muggle How Do I Tag Alternate Universe - High School Pandora Lovegood and Evan Rosier are Twins Platonic Relationships Bad Parent Walburga Black
'I'm pretty sure he's totally straight either way. Doesn't he like Lily? She doesn't seem to  like him back but still.... My brother would kill James and me if we dated anyway'~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~I don't even know. sorry if this en...
My Keeper

My Keeper

F/F
F/M
M/M
Multi
G
Updated
14.04.2025
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, Marlene McKinnon, Severus Snape, Dorcas Meadowes, Nymphadora Tonks,
Tags
Fluff Eventual Smut Hurt/Comfort Fluff and Smut Light Angst Not Beta Read Angst and Feels Regulus Black & Sirius Black Have a Good Relationship Regulus Black is a Brat Regulus Black is Bad at Feelings Pansexual James Potter Remus Lupin Uses a Cane
Regulus Black and James Potter are Hollywood’s current biggest actors. Noted for having a long-spanning rivalry since their school years.Their first film they shot together couldn’t be any more of a surprise.
Good old fashioned lover boys!

Good old fashioned lover boys!

F/F
M/M
G
Updated
14.04.2025
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, Marlene McKinnon/Dorcas Meadowes,
Tags
Trans Male Character Trans Regulus Black Alternate Universe - Everyone Lives/Nobody Dies James Potter Loves Regulus Black Bad Parent Walburga Black Trans Remus Lupin Rosekiller Background Relationships French Regulus Black Abusive Walburga Black Genderfluid Sirius Black No beta we die like regulus
*not abandoned I'm just taking a break*Regulus sees James for the first time in 7 years, they talk, and Regulus wants to have a good relationship with his brother but Sirius doesn't know that he has a brother yet he still thinks he has a sister. Regu...
Mauraders Oneshots

Mauraders Oneshots

Multi
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Regulus Black, Harry Potter, Sirius Black/Remus Lupin, James Potter/Lily Evans Potter, Remus Lupin, Sirius Black, James Potter, Peter Pettigrew, Lily Evans Potter, Mary Macdonald (Harry Potter), Marlene McKinnon,
Tags
Alternate Universe - Modern Setting Angst Other Additional Tags to Be Added Gender Dysphoria Fluff and Angst Alternate Universe - Muggle Alternate Universe - Coffee Shops & Cafés Trans Regulus Black Bad Parent Walburga Black Trans Remus Lupin Trans James Potter Bad Parent Orion Black
Just what it says on the tin. I got all the writing prompts from Creative Writing Prompts on tumblr and I will be linking the prompts.This used to be a 30 day challenge, but with school and activities starting up I realized I wouldn’t have time, so I...
it comes and goes in waves

it comes and goes in waves

Gen
M/M
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black, Remus Lupin, Sirius Black, James Potter, Lily Evans Potter, Regulus Black & Sirius Black, Sirius Black & James Potter, Sirius Black & Remus Lupin, Remus Lupin & Lily Evans Potter, Pre Sirius Black/Remus Lupin - Relationship
Tags
Alternate Universe - Modern Setting Pre-Relationship Alternate Universe Alternate Universe - Muggle Alternate Universe - Coffee Shops & Cafés Trans James Potter Genderfluid Sirius Black Minor Pandora Lovegood/Lily Evans Potter Minor Regulus Black/James Potter Pre-Sirius Black/Remus Lupin Pre-Regulus Black/James Potter Pre wolfstar
Years ago, after escaping an abusive home in London, Sirius and their younger brother Regulus set up a coffee shop in central Scotland, and while they’ve been managing fine so far, Sirius can’t help but feel a little trapped, like they’re not getting...
I loved, and I loved, and I lost you (And it hurts like hell)

I loved, and I loved, and I lost you (And it hurts like hell)

Other
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Sirius Black/Remus Lupin, Remus Lupin, Sirius Black
Tags
Smut Spanking Hurt/Comfort Vibrators Implied/Referenced Suicide Implied/Referenced Self-Harm Dom/sub Implied/Referenced Child Abuse I'm Sorry Additional Warnings In Author's Note Genderfluid Sirius Black yeah - Freeform
“What are your safe words?” Remus asks, taking off his tie and unbuttoning upper buttons of his shirt.“Red, green and yellow” Sirius gulps pushing his socks off and throwing them to join the shirt and tie in a pile on the floor“What else, slut?”“Two...
It's not just make believe

It's not just make believe

F/F
M/M
G
Updated
14.04.2025
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, Marlene McKinnon, Dorcas Meadowes, Marlene McKinnon/Dorcas Meadowes, Evan Rosier, Lily Evans,
Tags
Marauders Era (Harry Potter) Marauders wolfstar dorlene Trans James Potter Jegulus Regulus Black Needs a Hug Sunseeker Pandalily Genderfluid Sirius Black Simp James Potter fairytale AU
Will the slipper fit?
Panic Room

Panic Room

M/M
Other
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Regulus Black, Sirius Black/Remus Lupin, Remus Lupin, Sirius Black
Tags
Domestic Violence Past Child Abuse Past Abuse Physical Abuse Alcohol Abuse/Alcoholism Alternate Universe - Muggle Past Sexual Abuse Gay Remus Lupin Welsh Remus Lupin French Regulus Black French Sirius Black Chronically Ill Remus Lupin
We love the Remus and Regulus jam sesh
Scandals in Stairwells

Scandals in Stairwells

F/F
F/M
M/M
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling
Characters
Regulus Black/James Potter, Regulus Black, Original Female Character(s), Original Male Character(s), Sirius Black/Remus Lupin, Remus Lupin, Sirius Black, James Potter, Peter Pettigrew, Lily Evans Potter, Mary Macdonald (Harry Potter), Marlene McKinnon,
Tags
Heavy Angst Implied Sexual Content Mild Sexual Content Hogwarts Everyone Is Gay Trans Regulus Black POV Alternating Welsh Remus Lupin Spanish James Potter French Regulus Black French Sirius Black Genderfluid Sirius Black
THIS IS A HEARTBREAK HIGH AU DON'T BE SURPRISED WHEN THINGS GET SPICY!!James wanted the year to feel perfect, to have his time at Hogwarts end with a bang. A map exposing everyone he has ever been with is not the bang he was thinking of.Regulus wante...