1 - 20 of 2,530 Works in Step-Sibling Incest
Navigation
Listing Works
-
Sirius Potter and the Boy Who Became a Beast by notmuchmoretosay
Fandoms: Harry Potter - Fandom, Fantastic Beasts and Where to Find Them - Fandom, Cursed Child - Fandom
14 Feb 2026
Tags
Summary
Sirius Potter, son of the Chosen One, is set to be Hogwarts’ first Squib student in history whether the rest of the wizarding world likes it or not.
Nepotism? Yes. Genuine talent? Also yes. Love and support from his huge, chaotic family? Thankfully.
Then there’s his best friend Scorpius Malfoy, who’s always been a little odd, not to mention inconveniently, intensely, hopelessly in love with Sirius, despite their dads being married.
“At 14, his dad got Dark Lords and murdered classmates; Sirius Potter got a platinum blond step-brother with undiagnosed autism.”
Things get even stranger when Scorpius, typical school pariah, suddenly starts getting popular (Quidditch star, Head Boy shoe-in, Slug Club gem, Animagus to be) but finds he’d much rather be a beast than a boy.
Because becoming something else means facing both sides of yourself, and hurts far more when one side’s already hiding in the dark.
Aka — Scorpius is lovesick and dramatic, so naturally he accidentally makes it everyone’s problem.
⚧︎ MAIN SEQUEL 𖤍
Series
- Part 4 of The Hoo-Hoo and the Hare 🏳️🌈🏳️⚧️
-
The Weight of Crests and Crowns by Cythieus
Fandoms: Fire Emblem: Fuukasetsugetsu | Fire Emblem: Three Houses
13 Feb 2026
Tags
Summary
What if Sitri were alive during the events of Three Houses? What would happen if Dimitri confessed his feelings for Edelgard? A mixing of the elements from Hopes and Houses that explores the outcome these changes bring to Garreg Mach and how those effects trickle down to everything else.
Series
-
Tags
Summary
Octavia has always despised Valentine's Day, but especially since the imp had stolen away her dad it had made her extra uncomfortable. Loona tries her best to cheer her up.
-
Tags
Summary
“We can pretend,” she whispers, tugging on him. “Like we used to.”
Or: a step-sibling incest AU.
-
Shattering Mirror (A Not so Happy Ending) by HouseOfElves
Fandoms: 贄の赤ずきん | Nie no Akazukin (Visual Novel)
13 Feb 2026
Tags
Summary
Dennis will save and marry Lilia from their awful parents.
---
Lilia unfortunately, can't think of a way to make everyone happy.
She supposed this is the best it can get.
- Language:
- English
- Words:
- 1,097
- Chapters:
- 1/2
- Hits:
- 6
-
Tags
Summary
1970-1980纽约paro
和朋友从Stepbrother梗一口嗨就嗨出了一个宇宙……
不知道该怎么summary，总之是反战片。王大锤拿着女主角的剧本做1，能接受的来（真的会有人看吗！），本质上是黛西（有权力版）/希斯克利夫，两人都有点精神不正常
又名《艺术就是爆炸》 又名 《一张黄图引发的血案》
“你知道为什么庄园里要有马厩、狗舍和鸽房吗？”
“因为它们是我们的伙伴。”韦施塔德背诵着家庭教师的教导，他的手一直没有松开雷姆的袖子。
“对。但伙伴需要照顾。马需要刷洗，狗需要训练，鸽子需要喂食。”汎克拉德的手指轻轻敲着方向盘，家族纹章戒指在暗处闪烁，“如果你决定把这个……小客人留下，你就要负责照顾他。不是像玩偶一样玩几天就丢开，而是真的负责。你能做到吗？” -
Tags
Summary
From the original:
This is my story. The names and details have been changed to protect the privacy of those involved. Some of this account has been reconstructed from memory, but most of it has been based on a journal I kept during these years.
Series
- Part 57 of Reposted erotica from defunct sites
- Part 1 of Annie
-
Family Matters by FatalTora
Fandoms: 呪術廻戦 | Jujutsu Kaisen (Manga), 呪術廻戦 | Jujutsu Kaisen (Anime)
12 Feb 2026
Tags
Summary
Yuji's parents get divorced and he gains a harem of two new step-parents, 10(!?) new step-brothers, two of which seem madly in love with him and somehow everyone he shows interest in keeps dissappearing...
This is my attempt at a dark Yuji harem fic. Hope you enjoy!
!!NOT ALL TAG ARE ADDED YET DUE TO SPOILER REASONS THERE WILL BE MORE RELATIONSHIPS THAN WHAT ARE CURRENTLY TAGGED!!
-
Tags
Summary
Things had been like this for the last few days. You'd come home from school, snap at your stupid stepbrother, and lock yourself away in your bedroom for the rest of the day. The only thing different about today is your, oh sweet, stepbrother, seems to finally have enough of your bullshit.
-
Tags
Summary
Unhinged. Just pure unhinged.
-
January Jumble Scribbles by tw1sters
Fandoms: Superman - All Media Types, Marvel Cinematic Universe, The 355 (2022), DC Extended Universe, Batman - All Media Types, The Devil All the Time (2020)
12 Feb 2026
Tags
Summary
A brand new year means another three hundred or so days of over-commitment — this first month takes the form of 300-word January Jumble Scribbles hosted by @societynsoelsscribbles on tumblr!
Each scribble has a different rating and set of warnings, please read notes before you consume.
-
What the Dragon Disowned by lasttraintomoscow
Fandoms: A Song of Ice and Fire - George R. R. Martin, Game of Thrones (TV), House of the Dragon (TV), A Knight of the Seven Kingdoms (TV)
11 Feb 2026
Tags
Summary
Saera Waters, the one who looks Valyrian until you get to the copper-hair. Raised as a servant in the Red Keep, a copper-haired girl with Valyrian eyes grows up scrubbing floors beneath the shadow of a father who will never claim her. Born of a Lyseni woman and King Maekar I Targaryen, she learns early that dragonblood does not guarantee protection only silence, endurance, and pain. This is the story of a bastard daughter who looks almost like a dragon, and suffers for it anyway.
-
Tags
Summary
New generation is born and is ordered to fight evil way more malicious than they could imagine…
-
seven days at the country club by almostnowandthen
Fandoms: DCU (Comics), Batman (Comics)
11 Feb 2026
Tags
Summary
The Wayne Enterprises Board wants Dick, Jason, and Tim to spend a week at a country club filming a documentary commemorating the life and legacy of Bruce Wayne.
Except, it's kind of hard to act like a normal, all-American family on screen, when off-screen, they're getting busy getting on each other's nerves, in each other's business, and in each other's pants.
Series
- Part 2 of you can be my american boy
-
Tags
Summary
Vaid Empire: Conquest is a massive ongoing fantasy series that aims to mix erotica with the quality of a published novel. The Series focuses heavily on worldbuilding, story, and characters.
The world of Ayphieal is shattered and chaotic, with kingdoms and tribes of six distinctive races vying for territory amongst themselves. It is only when a young human warrior finally pushes back against the chaos that the world begins to shift towards order.
Having narrowly escaped a brush with death, Dominax dedicates his life to unifying the continent of Magnius under a single Empire by any means necessary, all while striving to conceive a powerful dynasty with his harem.
Series
- Part 1 of The Vaid Empire
-
Not quite brothers, not quite lovers (?) by Entelecheia_8970
Fandoms: Alien Stage (Web Series)
10 Feb 2026
Tags
Summary
“Is the food spicy?” Till asks and Ivan looks at him, shaking his head. “What? Are you sick?” Till reflexively reaches over to press the back of his hand against Ivan's forehead and flinches at the temperature.
Ivan leans towards Till's hand and Till tenses wide eyed at the unexpected reaction. He really thought Ivan would move back or push Till's hand away, Ivan must be more out of it than he thought.
Or Ivan goes into his first rut. What could go wrong?
-
Tags
Summary
Scarlet gets real horny while working and decides to text her boyfriend to come and help her out. With a phone screen that's a little too bright she ended up miss clicking and sending the text to her step-sister. Turns out her step-sister has been lusting for her for years.
Futa x Female, Stepcest, Large Cock, Large Balls, Cum Addiction. Chapter specific tags in chapter header (:
-
Tags
Summary
It was difficult living in a dysfunctional family.
We never got along.
He often called me a princess and would make every effort to make my life more difficult. At home, he’d accidentally spill drinks on me or shove my notebooks on to the floor. He’d accidentally use up all the toilet paper and not replace the roll. He’d accidentally throw my bag out the window. He’d accidentally run over my pencil bag.
I tried not to let it bother me, but…
I hated Billy Hargrove.
-
Sweeter than Sweet by BOTTOMGOJO for Natalie1234
Fandoms: 呪術廻戦 | Jujutsu Kaisen (Anime & Manga)
10 Feb 2026
Tags
Summary
Gojo nodded politely, curling to tuck himself in the corner of the bed. His gaze tipped as he did, following the pale spirals of smoke curling lazily and dissolving to unfurl against the open window. And Kenjaku’s lips curved, fingers idly toying the blunt before glancing at Gojo. “Want some?” rolling the joint between his fingers, tone edged with amusement. And it was Getou who scoffed at once, the derision sharp enough to leave the air bristling in its wake.
“Hes barely old enough to drive, and you wanna get him high?” Getou muttered. Leaning over Gojo’s shoulder under the guise and pretense of instruction, one arm slipping closer. “No, no, like this” he whispered softly, drawing Gojo closer as if the closeness justified the lesson without the intention folded neatly behind it. “Mhm, just like that” the praise dwindled the faint proximity that remained between them.
Series
- Part 30 of Getou & Gojo.
-
Tags
Summary
Draco disgusted himself. Not enough to stop, mind you. He unzipped his trousers, right there in her room, and slipped his already interested cock out of the placket of his boxers. He’d done this enough times before for his body to be primed for it. Just the smell of her bedroom would make his cock ache now. He wrapped the pretty pink scrap around his cock and began to fuck his fist, fast, angry, vicious.
She was a no one and a nothing. He was the Heir to the Malfoy name. So why, fucking why, did he want her so much?
His cock was dripping, spilling precome onto the fabric and easing his way. He fucked faster, harder, right on the edge now—
“I knew it was you stealing my— What the fuck, Malfoy?”
Or:
A Kinktober 2025 Dramione Muggle AU stepsiblings and their antagonistic romance.