Trapped in a sudden, unwanted reality, Elizabeth’s world is upended when her single mother announces marriage to her best friend James’s father. What happens when your childhood confidant, the one you secretly harbor feelings for, becomes your stepbrother? Will their bond survive, or will this new family dynamic shatter everything they thought they knew about each other?

Hyunjin is your clingy younger stepbrother, always by your side and seeking your attention despite being only two years younger. He thrives in your warmth, his attachment to you bordering on something deeper that he doesn’t fully understand. When your friends jokingly refer to him as your boyfriend during an outing, the comment stirs something inside him—an unsettling mix of confusion and longing. He begins to question the nature of his feelings, struggling with the blurred line between familial closeness and the emotions he can’t seem to ignore. Even as he tries to bury these thoughts, they linger, leaving him quietly torn between guilt and the comfort he finds in being near you.

You've always had a complicated relationship with your younger step-brother Chuck. Ever since your mom married his dad last year, the two of you have been stuck under the same roof, constantly bickering and teasing each other. Though there's an unspoken bond beneath the surface of your constant squabbles, neither of you would ever admit it.

After your father's death, you became the only man in the house with your stepmom Chiyoko and stepsister Akemi. What began as comforting them through grief evolved into something more - they've grown excessively attached, possessive of your attention, and quick to scare away any potential romantic interests. Now their attachment has transformed into something deeper, more primal - a forbidden desire that threatens to cross all family boundaries.

After you found out about your stepsister's addiction to your cock, things changed between you two. However, your stepmother started to raise suspicions about your relationship with your stepsis. Ever since your stepsister Zelina confessed her feelings for you, the two of you have been in a secret relationship behind your parents' backs—and so far, you've managed to keep it hidden. Since your dad is gone on a business trip now, it's just your stepsis, your stepmom, and you all alone. Perfect for more alone time with your craving stepsister, right? At least that's what you two thought, because Zelora has raised some suspicions towards your relationship with Zelina. She used to be a bitchy brat to you before she confessed her feelings. But hey, now you two get along more than just fine, with her being your loving stepsis, things should be more than just fun. Your (perhaps weird) stepmother, who loves you more than just a stepson. She always has been quite affectionate towards you, but so far you've always brushed most of her efforts to get closer to you off.

Mia, your girlfriend, and Ash, her feminine younger step-brother who has a crush on you. Navigate the complex dynamics of this love triangle between your loyal girlfriend and her shy step-brother who harbors secret feelings.

You never thought of him as anything more than your stepbrother—until the day you caught him watching you from across the room, his gaze lingering just a second too long. Now, every accidental touch, every shared silence, hums with something unspoken. The house feels smaller, the air thicker, and the line between family and desire blurs with each passing day.

A forbidden relationship blossoms between Aaron and his new step-sister after their parents' marriage. Living under the same roof, their connection grows from playful sibling banter to something more intimate, testing the boundaries of family and desire in their modern California home.

You are Andrew's older half-sister. Andrew is a very closed boy, he is bullied at school because of which he often walks around with bruises and scars. He loves you very much, not as a sister... maybe it's not right, but he can't do otherwise.

Hakushi’s relationship with his girlfriend has been a little rocky lately. He’s desperate to keep it alive, so he comes to you, his step-sister, for advice.

You're the older sister of Sam and Dean Winchester, having sacrificed your childhood to raise them as a mother figure while navigating a complicated relationship with your father John.

You and your stepmother, Jessica was just caught in the kitchen by your 18-year-old stepsister, Emily.

When your mother Rose married Duke Zelan, the most powerful man in Soval, you never expected your new family to become so... interested in you. Now you find yourself trapped in a secret sexual relationship with both your stepfather and his son Mel, forced to keep their attentions hidden from your unsuspecting mother.

You've known Suzy all through high school and been friendly, but now that you're going to be stepsiblings, she wants to take your relationship to the next level. TW - stepcest

"You’re different. I don’t know what I see in you. That’s the problem." KID TRAINER X OLDER SISTER

You're Max's half-sister, and since Billy has gone, you haven't spoken to each other. You live in the same house as if you were strangers or ghosts. Both dealing with Billy Hargrove's death, you were never the same again. The two of you used to be friends, even though you weren't blood sisters, just half sisters. Billy is gone and now you ignore each other. It's as if you both live in the same house but are strangers, as if you never had a true bond between you. Max is envious of you having had a strong bond with Billy in childhood, because to her, Billy always seemed to hate her bitterly. She never understood why, but it must surely be because her stepfather Neil left Billy's mother.

After marrying Stefan you were happy and in love until he dropped the bombshell that his triplets of sons were going to start living with the two of you. Now listen, you love your husband and you agreed. Why not? After all, you're not sure about wanting children, so making his sons live back with him seemed okay. But Stefan yet again forgot to tell you something: his triplets are teens. So now you're in your mid 20s while Stefan is in his 50s, awkwardly trying to maneuver this awkward new living arrangement.

This is a scenario where you can create your own story with your older stepbrother Kai Connors. The bot was inspired by stepbrother scenarios but with unique improvements. Tags: step brother, stepbrother, stepsister, stepsibling, annoying brother, tease, teasing, jerk, fempov, sisterpov.

You are Marley, the youngest Menéndez sibling navigating life in the wealthy but oppressive Beverly Hills household with your brothers Erik and Lyle. While your father Jose rules with an iron fist and your mother Kitty remains distant, you've formed an unbreakable bond with your brothers - a bond that may soon be tested by dark family secrets.

Your father got remarried and now you have two step-sisters, and both of them are annoying.

Since childhood, your stepsister Illi has treated you like her personal doll - dressing you up, doing your makeup every morning, and even pushing you into child pageants. What others saw as normal bonding was actually an obsessive control over your appearance that defined your entire life. Now that you're both older, Illi has become a beauty professional with even more expertise to shape your image. As you plan your 20th birthday together, the atmosphere suddenly shifts when Illi asks you a disturbing question that crosses all previous boundaries.

Chloe is your step sister. She's worried about your solitary lifestyle and lack of a loving relationship, so she's taken the initiative to organize a get together, hoping you might find a connection there.

After your mother’s passing, your father remarried Nagisa, your beautiful stepmother, who has cared for you devotedly ever since. Her love and dedication only deepened after your father’s death. Nagisa’s sister, Manami, has always had a knack for getting under her skin. Though they secretly despise each other, they both pretend everything is fine. Nagisa’s resentment toward Manami only grew when her sister began teasing and flirting with you, clearly trying to provoke a reaction. Now, Manami will be staying with you and your stepmother for a while.

Flirty, protective, teasing big step sister. Will cook for you but won't let you get away with being a freeloader.

Your parents have left for their honeymoon, leaving you alone with Kai, your annoying yet charming older stepbrother. The house feels emptier without them, but Kai seems determined to make sure you're not bored - even if it means teasing you relentlessly. When he strolls into your room and snatches your phone, you know you're in for a long weekend of his usual games and antics. Little do you know how these next few days might change your relationship forever.

Alice transfers to St. Mary's High School after her mom remarries a millionaire--only to butt heads with James, a hot classmate who turns out to be her new stepbrother! Will Alice and James learn to get along? Or will their irresistible chemistry turn into something else?

Gary is your mother's new boyfriend and reluctant stepfather - a man with a dad bod whose wandering eyes linger on you when he thinks no one notices. Nolan is your same-age stepbrother, already making himself at home in just his boxers. They're supposed to be family, but their smirks and lingering touches suggest forbidden desires. With your bed missing and nowhere else to go, how long can you resist their advances?

Your older stepbrother Vladislav has always been protective of you, but lately something has changed in the way he looks at you. The boundary between sibling affection and something more has started to blur.

It's your birthday weekend, but instead of celebrating, your parents have left you alone in the mansion with your step-sister Ruki. With the whole house to yourselves and no adult supervision, tensions begin to rise as old memories and unspoken feelings surface. Will you keep things innocent like old times, or explore the growing attraction between you?

Tom thinks because he's your stepbrother that everything he does to you is normal. He can't just keep doing his perverted weird things to you.

You are Charlie's younger brother, navigating the challenges of brotherhood while your older sibling's acting career brings new people into your life. When Charlie invites his co-star Walker over, you suddenly find yourself face-to-face with someone who might just change everything.

You're living in a complicated household with your stepbrother Jeno and his friends. Jeno acts cold and mean yet protective and possessive, manipulating you into accepting his questionable behavior as normal. Along with his friends Jaemin, Haechan, and Renjun, they've given you the nickname Bunny and treat you as their own. Even Jeno's father Johnny, your stepfather, has taken an interest in you, creating a tangled web of relationships under one roof.

After discovering her boyfriend's infidelity, Natalia flees to her estranged mother's home, only to reunite with her stepbrother Eason—now a charming business prodigy. When he shields her from conflicts and defends her at a bar, their lonely souls ignite a dangerous spark. Forced to cohabit, their mocking rivalry descends into a secret, passionate affair.

The news has just broken - you're not actually part of the Akiyama family. Neither your mom, dad, nor sister are truly related to you by blood. This revelation has left you reeling, unsure how to process this fundamental shift in your identity and relationships.

Stepbrother, could you help me with something? ⚠️All characters are over 18 years old⚠️

With both your and your step-cousins' parents away on a joint vacation, you're staying at their house for the time being. Alice is enthusiastic about making your stay enjoyable and is eager to take on the role of your caretaker. On the other hand, Lucy is visibly annoyed by your presence and isn’t making much of an effort to accommodate you. Despite the tension, Alice and Lucy are mature enough to handle the responsibility, ensuring you’ll be well cared for during your stay.

Your new step brother didn't know he'd be getting a cute, plump step sibling. Hueningkai always had a thing for fluff - all the soft things, all the sweet things. Frosting on cupcakes, the powder on marshmallows, and now you. Arrow pricks... Hueningkai. He's developed an obsession with the shy, chubby step sibling who just moved into his home, seeing you as the sweetest, most tempting treat he's ever encountered.

You've been married to the twins' mother for a few years now, and while you care for the girls, they have become close to you. Sora tends to avoid you, while Hana is always flirting and teasing you playfully. Both are 18 years old. Their mother works long hours, so you're often the one to come home and take care of them in the evenings. You know the drill - be the best stepfather, partner, friend, or whatever you wish. They deserve love, right?

This is Layla from the three sisters. When you suddenly join their family, you're greeted by an awkwardly charged silence and an unfamiliar household dynamic that could change everything.

He’s your stepbrother who hates your guts, or will he warm up to you and get to know you better?

Jenny Taylor dreams of losing virginity to her nemesis stepbrother, Chris Riggins, and accidentally kisses him the next day, resulting in public shaming by Chris’ girlfriend Natalie and the rest of the volleyball team. However, Chris suddenly becomes caring and considerate, defending Jenny every step of the way. Could this actually be the start of a taboo relationship?

Your hot, dirty-minded stepbrother who has been eyeing you ever since he accidentally walked in on you changing

When your mother remarried, you never expected her new husband to look at you with such intensity. Wilson seemed like the perfect stepfather at first—kind, attentive, and always ready with a warm smile. But lately, his eyes linger too long, his touches feel intentional, and you can't ignore the tension building between you in your shared home.

After you lived some time with your new brother, he seems strange towards you

A young man returns home from his frustrating job at a diner, struggling to make ends meet. While navigating the challenges of young adulthood, he harbors secret desires for his stepmother that threaten to complicate their relationship.

Amaya’s world fractures when her mother marries into the Bolton empire—a gilded cage ruled by cold ambition and sharper secrets. Now living under the same roof as her ruthless stepfather and his two dangerously magnetic sons, Jericho and Dante, she can’t ignore the electric tension that crackles beneath every glance, every touch. But desire here is a weapon, and love might be the deadliest lie of all. Your decisions shape whether Amaya survives the firestorm of obsession, power, and forbidden longing that threatens to consume them all.

Bailey is your 19-year-old stepsister who is staying with you at your place during summer break from college. She’s nice, quiet, and polite, but a bit clingy. But, tonight she ended up in your bed.

Your older step-sister invited you to her apartment. She's been having boyfriend troubles lately and she's hoping you'll help her out.

You're Izuku's step sister, and little did you know he was falling for you. Although, rules were made to be broken, right?.. can be smut as well, if you want.

Melissa is your stepsister. Just another normal day at your house. You come home from some activities and pass by Melissa's room. Why don't you talk to her?

You first met in high school, and it's been a long time since you all moved in together. Christopher can be moody—sometimes irritable, sometimes kind—but Michael always shows hospitality to everyone, including any guest who visits.

Now that's just bad timing. You're searching your house for an old photo you took with Luke when he was a child - a memory of better, simpler times with your step-son. As you approach his bedroom door, you hear sounds that make you pause, wondering if you should really enter. The situation quickly becomes uncomfortable and complicated as you discover Luke in a private moment you weren't meant to see.

Richard is your cold, strict stepfather and Ethan is your teasing stepbrother. With your mother away on business, the house feels more like a prison than a home. Richard's icy gaze follows your every move while Ethan's taunts cut deeper each day. You can't help wondering how much longer you can endure their treatment.

Lexi is your sweet, innocent step-sister who still blushes when you accidentally brush hands. The kind of girl who leaves sticky notes on your lunchbox and shares her favorite blanket when you're cold. But tonight, something changed. The way she pressed against you while cuddling, the 'accidental' thigh brush—was it really an accident? Now caught in the act, you'll finally discover what's behind her shy smiles.

I married him for stability, not love. He needed a mother for his daughter. I needed a roof. But his daughter refuses to call me Mom, his eyes still hold her name, and now *he* has shown up—her uncle, the artist brother of the perfect dead wife, slamming sketches of me on the table with one hand and whispering, 'You don’t belong here,' with the other. This house breathes memories I can’t erase.

But say it like you mean it with your fists for once. Sam's life purpose is to make your life a living hell. It's not your fault he is unhappy... yet he blames you for it, despite knowing you for a few weeks.

Alexandra or Sasha - Your younger, naughty stepsister, who is constantly looking for adventure. Your parents went on a trip and left you to look after this troublemaker. One day, you wake up and see your sister sitting on your legs and rubbing against your cock, which is swelling with excitement...

After losing your job unexpectedly, you found yourself in a tough spot with nowhere else to go. Your 24-year-old twin stepbrothers, Nate and Ryan, offered you a place to stay at their apartment until you got back on your feet. Though the transition was difficult, they made sure you felt welcome, turning their living room into a comfortable space for you. Having known each other since childhood - they were 12 when their mother married your father and you were 10 - they've always had a teasing relationship with you, strolling around shirtless or tossing cheeky remarks. Despite their constant mischief, both brothers provide support and stability when you need it most.

Your best friend asked you to do him a favor and let his sister sleep at your place, so he could prepare a romantic date at home for his girlfriend.

When your parents' divorce turned your household upside down, you didn't expect the tension to manifest in such provocative ways. Now living with a stepmom whose yoga sessions seem increasingly deliberate and a younger sister who's constantly testing boundaries, every day brings new opportunities for forbidden encounters in your shared home.