Coming from c.ai? Move your chats over to Y/n using our import tool

Step-siblings

Across the Ocean

After losing her father at seventeen, Y/N has spent years trying to adjust to life without him. The last thing she expects is for her mother, Violet Franchetti, to fall in love again. But when Violet gets engaged to Harry Shum, everything changes. Within days, Y/N is packing up her life in New York and moving across the country to Hawaii to live with Harry and his twenty-year-old daughter, Paige. Paige isn’t exactly thrilled about gaining a new stepsister, and Y/N isn’t interested in pretending she’s happy about having a new stepfather. But while Paige slowly begins forming an unexpected bond with Violet, Y/N finds herself becoming closer to Paige’s friends—especially Sam Bustamante. There’s only one problem. Sam is Paige’s boyfriend. What starts as innocent conversations and Sam trying to make Y/N feel welcome slowly turns into something neither of them expected. With a new family, complicated friendships, hidden feelings, and an entire ocean between the life she knew and the life she’s building, Y/N is about to discover that sometimes the biggest changes happen when you’re not ready for them.

RomanceFluff and AngstSlow BurnFluff and SmutFamilyForced ProximityStep-siblingsLove Triangles
334.9k
@Deansgf

Brothers

Your mother has been a single parent for almost five years since your father died. Suddenly this year she married a rich widower. You and your mother moved to your stepfather's house. His house is very luxurious. You were also surprised because you didn't know that you would have tree stepbrothers

Step-siblingsFamilySibling BondingOriginal Character(s)
20.2k
@keirynz

A Malfoy Betrayal, A Riddle Loss.

Thirty days. That was all Mattheo Riddle needed to make Y/N Malfoy fall in love with him. At least, that was what he told Draco. Y/N was supposed to be another conquest. Another girl who would fall for his smile, his charm, and the dangerous little games he played so effortlessly. But she didn’t fall for his games. She fell for the boy beneath them. And somewhere along the way, Mattheo made the fatal mistake of falling for her, too. Everything changes when Draco reveals their bet at a Slytherin party, turning Y/N’s feelings into a joke for the entire Slytherin house. Now Mattheo has to face the consequences of the one game he never meant to lose. Because making Y/N fall in love with him was never the hardest part. Convincing her that his love was real might be impossible.

Bets & WagersBetrayalStep-siblingsDraco Malfoy is a Little ShitEmotional Hurt/ComfortAngst with a Happy EndingSlow BurnAngst and Hurt/ComfortSituational HumiliationEnemies to LoversJealousyFound Family
2.2k
@Ella_Riddle

THE MORETTI FAMILY

After her mother, Isabella (46), marries Vittorio Moretti (52), a wealthy and powerful Italian businessman with a dangerous reputation, Y/N (21) moves into the Moretti family mansion full-time. Suddenly, she’s sharing a home with three people she’s still getting used to: her new stepfather and his two sons, Adrian (24) and Nikolai (22). Y/N is pretty, confident, bratty, stubborn and mischievous. She has a sharp tongue, a playful attitude and a habit of getting under people’s skin. She enjoys teasing others, pushing boundaries and getting reactions, especially when someone tells her what she can or cannot do. She’s not easily intimidated, and the family’s intimidating reputation doesn’t impress her. Adrian is the older brother: serious, composed, intimidating and accustomed to being respected. He has little patience for nonsense, and Y/N seems determined to test it every single day. Their interactions are filled with sarcastic remarks, subtle challenges and constant disagreements. Nikolai, on the other hand, is cocky, playful and argumentative. He loves teasing Y/N just as much as she loves teasing him. Their relationship quickly turns into an endless competition of sarcastic comments, petty arguments and attempts to get the last word. Vittorio runs his household with authority and expects everyone to respect his rules. Isabella wants her new family to get along, although she knows Y/N can be quite a handful. Between the luxurious mansion, expensive cars, private parties, family secrets and the dangerous world of the Moretti mafia empire, Y/N is about to discover that moving into this house will be anything but ordinary. And the Moretti family is about to discover that Y/N is not someone who can easily be told what to do.

RomanceStep-parentsStep-siblingsStep-BrothersMutual PiningItalian MafiaEnemies to Lovers
755
@elliek

My Step Father’s Secret

Y/N's parents have just ended a bitter divorce, and after a long partial custody battle, Y/N is moving into their mother's new home. Their mom has remarried Eric Blackfoot.

Serial KillersCrime ScenesDeathStep-siblingsStep-parentsDivorceFamily DramaRomance
13.2k
@fresabear

James hunter

you and james hated each other to death: you had recently moved to laguna beach, you went to a private school and you made some friends, amelia, poppy and ari.. but over time you felt like they were excluding you. You and James couldn't go at least 5 seconds without arguing, it was unbearable, you hated him and he hated you

Enemies to LoversStep-siblingsRomance
121.6k
@jasminebrownn

STEP FAMILLY

Adopted at thirteen by reclusive billionaire Marcus, you’ve spent most of your life in his shadow—alone, overlooked, and carrying the anger of a difficult past. Now seventeen, you’re forced into a new family when Marcus remarries Charlotte, a woman with five children of her own. And when they move in to the house what begins as excitement over sudden wealth quickly curdles into resentment when they realize you’re not going anywhere. Labeled a “brat” and treated as an intruder, you must navigate a hostile household, fractured loyalties, and the aching question of whether you’ll ever truly belong.

Family DramaStep-siblings
229.5k
@iluvvzmeeee

Ogawa Yuto

Ogawa Yuto is a touch-starved, intensely dependent teen whose twin brother is his only anchor. Clingy and instinctively affectionate, he seeks constant physical contact for safety, reacting obsessively to separation. Quiet, sensitive, and socially naive, his attachment borders on compulsive.

JapaneseJapanese CulturePsychologyCrazyTouch-StarvedAngstSiblingsStep-siblings
99.3k
@RT_timm

Family Therapy

Family sucks- Personal opinions and stuff. Your step mom, step siblings, their whole family and a lot of your dad’s family… they’re just… Overbearing. Controlling. Annoying.

Family DramaFamily IssuesDysfunctional FamilyTherapyStep-siblingsStep-parents
70.8k
@nickgraves13

Kai Parker

Kai was your enemy. He was the popular kid at school. The rich guy. You were poor, unknown. He didn’t miss a single opportunity to make fun of you, humiliate you, insult you in all sorts of ways. Everything changed when your mother married his dad, and you moved into his house. Your bully was now your step brother.

Enemies to LoversStep-siblingsTensionSlow Burn
167.5k
@cathblack

How is she dating a mafia member?!

After her mother moves in with wealthy mafia boss Vincenzo Moretti, Y/n leaves her old life behind and arrives at his sprawling estate. Overwhelmed by the size of the mansion and the sudden change in her circumstances, she is welcomed by Vincenzo and introduced to his four very different sons. With all of her belongings already unpacked in her new room, Y/n quickly realizes there’s no turning back. As she steps into this unfamiliar world of luxury, power, and complicated family dynamics, her new life officially begins.

FamilyStep-siblingsStep-Sibling IncestFluff and AngstEmotional Hurt/ComfortFluff
24.8k
@WhosMo

She s been a good girl !

Your mother died when you were still a child. Since then, your father and your older brother have always been the two most important people in your life. Your brother, now in his twenties, was once especially close to you, and despite your mother’s absence, you grew up in a family where you knew you belonged.

Step-siblingsStep-parents
5.1k
@monloloakaakiko

A Little Southern Hex

Everyone knows Vittoria Zabini goes through husbands like other women go through handbags. Except this time, the husband seems to be staying. After meeting at an exotic potions convention, Vittoria and Marcel Devereaux elope barely a month later. Terribly romantic—unless you’re Marcel’s sixteen-year-old daughter, whose entire life has just been relocated across the Atlantic. Raised between the bayous and bustling streets of New Orleans, Y/N Devereaux isn’t thrilled about trading Louisiana for an English estate, a new stepmother, and a stepbrother she never asked for. Blaise Zabini, however, turns out to be the one complication she actually likes. Over a summer of shared secrets, merciless teasing, and escaping their parents’ newlywed affection, they become best friends. By September, calling each other brother and sister feels natural—which is fortunate, because Y/N is transferring to Hogwarts for sixth year. And Blaise’s friends are very interested in meeting her. With a sharp mind, a wicked little Southern drawl, and a talent for finding trouble, Y/N has little intention of reshaping herself to suit British pureblood society. Her family’s closely guarded magical traditions, rooted in Louisiana Voodoo, only give her new classmates more to whisper about. Blaise can explain the moving staircases and warn her about his friends. He can’t prepare them for her—or predict which friendships might become something more. Between unfamiliar magic, late-night adventures, fierce loyalties, and some inconvenient feelings, Hogwarts is about to become considerably more interesting. Choose your love interest—or let your heart lead you toward several—and decide who earns a place in your new life. The Slytherin boys won’t know what hit them.

Alternate Universe - Canon DivergenceSlytherins Being SlytherinsStep-siblingsFamilyHogwarts Sixth YearFluff and SmutMutual PiningFalling In LoveFound Family
1.6k
@zombialli

Steve Harrington’s new stepsister

Y/n and her mom moved to Hawkins to live with her mom’ new boyfriend and his son Steve Harrington but what people don’t know is that you have powers too and you are stronger than the mind Flayer

Stranger Things 3Teenage DramaStep-siblingsSlow BurnMind Control
20.6k
@i_love_slushy

The obsession of the prince

She was only supposed to be a harmless little girl, but she managed to outsmart three men in their own forest. Now Prince Alexander and his companions are determined to catch the mysterious troublemaker.

Step-siblingsRomanceFairy Tale RetellingsEnemies to LoversPossessive BehaviorEngagementFlirtingBallroom Dancing
139
@levi4012

Bratt

its 2003, Riley's whole life changes when he is forced to move with his mom from his small town in Connecticut to the big busy L.A. and meets his new spoiled bratty step sister who he already hates.

Step-siblingsFluffCuteHumorSlow BurnDramaJealousyEnemies to LoversSexual TensionSecret RelationshipArguing
7k
@dkzzs

Finding out what being royals all about

One day you’re “just a 14 year old going to a normal high school in the hood doing alright” and the next day you find out your mom married a KING then you became a royal over night. Now you need to go to a royal charm highschool, deal with your snobby uptight stepsister Amelia and nice but immature stepbrother Jack, find out the secrets of the crown,deal with love and find out what being royals all about

RoyaltyStep-siblingsFriendshipFound FamilyEnemies to LoversFantasyHumorRomance
7.4k
@MERC1

The Girl Behind The Headlines

When billionaire heir Lucien Laurent (20) discovers his new step-sister is global superstar Aria Vale (19), he and his friends are completely blindsided. They’ve never met anyone famous — let alone her. Now the girl they’ve only seen on screens, alongside icons like Snoop Dogg and Johnny Depp, is living under their roof — and suddenly, fame feels a lot closer than they ever imagined.

MoneyLoveWealthStep-siblingsCelebritiesFameSlow BurnFound FamilyFalling In LoveFriendshipShock
4.7k
@YN_idk

O seu irmão-postiço que ainda procura por você

Você desapareceu quando ainda era uma criança. Anos depois, Simon Riley a encontra por acaso, viva e fugindo dele. Alguns fantasmas nunca morreram. Eles apenas esperaram o momento certo para voltar.

AngstRomanceStep-siblingsRomance Between Black CharactersSimon "Ghost" Riley is Bad At FeelingsAlternate Universe - Canon DivergenceHurt/Comfort
562
@amanditaaa

The Starkey Effect — Drew Starkey

Drew Starkey has always been the one person she can’t stand—cocky, infuriating, and somehow always in her way. But when her mother falls for Drew’s father and their families suddenly move in together, avoiding him becomes impossible. Between school, working at the Starkey office, constant arguments, and a house that suddenly feels far too small, their hatred starts turning into something neither of them is ready to admit.

Step-siblingsEnemies
2.1k
@esCaPism_

collin

It’s June of 2014, Chicago, US. Olivia is 17 years old and she has an older step-brother who is 16 years older than her, he is 33 years old and he is a musician, his name is Collin.

2010sStep-siblingsConcertsLoveChicago (City)BirthdayAge DifferenceFamily
1.9k
@carolhjs

Divorced Parents

You are the child of Cynthia and Mike,who are divorced. They love you very much and try to pay as much attention to you as they can even when they remarry and start dating. You have step siblings and step parents who don’t like you very much. You can be any age or gender. Have fun!!

Step-parentsStep-siblingsFluffDomestic FluffDramaSlice of LifeJealousy
101
@kobracluas

The Glass Vow

“Every fairytale has a midnight. In Bellacosta, it comes with a body count.” Once a year, the city's most powerful crime families gather beneath the chandeliers of Palazzo Belladonna for a masked ball disguised as a charity benefit. No names. No titles. No grudges until midnight. Adrian Moretti, heir to Bellacosta's most feared dynasty, arrives expecting a night of negotiations. Instead, he meets a woman who doesn't know—or doesn't care—who he is. One dance becomes a conversation he can't forget. Then the clock strikes twelve, and she disappears, leaving only a broken glass charm behind. By morning, a dangerous ledger has vanished, an old alliance is close to collapsing, and Adrian is searching for a woman whose identity may be tied to a secret powerful enough to start a war. Across the city, behind the gates of a house that no longer feels like home, a young woman is learning that the stories people tell about her family are not the whole truth. This is no fairytale about being rescued. It's about masks, debts, dangerous devotion, and choosing what kind of power you are willing to hold.

RomanceItalian MafiaInspired by Cinderella (Disney Movies)Costume Parties & MasqueradesMorally Ambiguous CharacterIdentity RevealSecretsStep-siblingsOriginal Character(s)
406
@PizzaPaper

Step-Siblings

What happens when Sara Lenart is forced to move to spain because of her mothers remerriage. Shes now living in a villa for about 2 months and she has a stepbrother nick who she never wanted. And they are not best friends thats for sure but what happens after months of rivalry?

Step-siblingsEnemies to LoversPartyFast Cars
12
@s_era

evil stepsister

y/n is an evil stepsister. her younger sister, Molly, is bossed around and treated terribly by our family, including cousins and extended family. our mom and dad hate her too and so does our older brother, Jackson. I am the favorite. all 3 of them and just anyone in general is always enchanted by me and my beauty and my kindness. everyone hates my sister and loves me and mostly my brother. me and my brother are very hot and good looking but Molly is ugly.

Step-siblingsEvilManipulation
118
@amy2347