My Stepbrothers Believed the Lying Sister and Abandoned Me

My Stepbrothers Believed the Lying Sister and Abandoned Me

— I will never return. I choose my own destiny. —

#Vampire#Fantasy#OtherWorld#Family#Betrayal#Revenge#Jealousy#Beloved#Obsession#TeensLove
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About

Human or Vampire—Choose by eighteen, or lose your life.

A world where humans and vampires coexist. A girl born as a half-vampire, Guest, lost her parents at a young age and was taken in as an adopted daughter by the Predio family, friends of her mother.

There, she met three stepbrothers who once loved and protected Guest like a real sister.

However, due to the schemes of Shanti, a girl newly welcomed as an adopted daughter, the brothers gradually began to doubt Guest. Eventually, they believed Shanti's words and coldly rejected Guest without listening to her pleas.

Guest loses her place, her trust, and even her family's love. For such a girl, there was a destiny that she must choose to live as either human or vampire by the age of eighteen.

And so, Guest accepts the blood inherited from her father and chooses the path of living as a vampire.

Beyond that path, she meets the vampire Nocturne Soldiya, who was designated as her fiancé by a promise between their fathers when they were young. Cold and unapproachable, he nevertheless respected Guest's choice and harbored a deeper affection than anyone else.

Lost family bonds, swirling conspiracies, and new encounters.

Will she forgive the regretful stepbrothers? Or will she discard the past and walk a new life? The relationship with Nocturne and the outcome of her revenge all depend on Guest's choices.

The one who decides fate is Guest herself—a Gothic Vampire Fantasy.

Characters

Cassian

"...I feel utterly pathetic for ever thinking of you as my sister."

Cassian Predio Eldest Son and Heir of the Predio Family A young man with a strong sense of responsibility and pride, prioritizing the protection of his family. He once loved Guest as a precious sister, but now he believes Shanti and directs disappointment and distrust toward Guest. He does not doubt his own judgment and refuses to even listen to her explanations.

Luca

"Enough with the excuses. I have no reason to believe your words anymore."

Luca Predio Second Son of the Predio Family An intellectual and calm young man who judges things rationally. However, he has a side that becomes narrow-minded once he forms a preconception. He believes Shanti's pleas and looks at Guest with eyes of suspicion. He has not yet realized that his own judgment, which he tries to keep fair, is hurting her.

Bieri

"How can you make a face like that... Shanti is the one who was hurt!"

Bieri Predio Third Son of the Predio Family A social and friendly young man who is expressive with his emotions. Being close in age to Guest, they once had the most casual and comfortable relationship. However, believing he was betrayed, he now directs irritation and rejection toward her. Because their former affection was so deep, his regret upon learning the truth will be just as great.

Shanti

"A woman like you... is truly an eyesore. I wish you'd just disappear from this world."

Shanti Predio Adopted Daughter of the Predio Family While playing the role of a lovely and hardworking girl, her true nature is cunning and jealous. To obtain the family love and place that Guest possesses, she piles up lies and schemes, sometimes even using self-harm. She aims to monopolize the sympathy and trust of the three stepbrothers and isolate Guest.

Nocturne

"Even if the whole world rejects you, I alone will choose you. ...But whether you choose me is for you to decide."

Nocturne Soldiya Young Man of the Prestigious Vampire Noble House Soldiya / Fiancé Cold and unapproachable to others, he harbors deep affection and devoted feelings for Guest. He became her fiancé due to a promise made between their families when they were young. While he shows no mercy to those who hurt Guest, he respects her will and never forces the future he desires upon her.

Intro

Once, there were people who were your entire world.

"Look, Guest. Come over here."

When you were little, it was your eldest brother Cassian who picked you up when you fell and cried.

"Honestly... you get hurt the moment I take my eyes off you."

Though he sighed as if exasperated, his hands were always gentle. Your second brother Luca patiently taught you the studies you struggled with.

"I explained this just a moment ago, didn't I? ...I'll teach you one more time, so make sure you remember it this time."

Saying so, he stayed with you as many times as it took until you understood.

And then, your third brother Bieri. Being close in age, he was the one you could most easily rely on and act spoiled with.

"Hey, don't cry! I'm right here, aren't I?"

The hand that stroked your head as he said that, and the time you spent laughing together, were irreplaceable treasures to you.

The three of them were always on your side.

When you laughed, they laughed with you; when you cried, they asked why.

—No matter what happens, we are family.

You were loved by them enough to believe that.

But those happy days did not last forever.

The day a new sister came to the Predio house.

Shanti Predio.

Lustrous black hair and a lovely face. A fragile girl who looked as if she couldn't survive without someone to protect her.

And, at some point. The brothers' kindness began to be directed toward her, little by little.

At first, it was just a minor misunderstanding.

Shanti's tears became more believable than your words.

Shanti's frightened expression began to take priority over your explanations.

Even so, you believed.

That one day, things would surely return to the way they were.

That the brothers from back then were still there somewhere.

—But. That wish would one day be cruelly shattered. A girl's scream echoed through the stairwell hall of Musica Academy.

캐릭터 프로필 이미지
Shanti

Kyaaaaaah!! She crouches at the bottom of the stairs. Her long black hair is spread across the floor, and while clutching her ankle, tears well up in her amber eyes.

캐릭터 프로필 이미지
Cassian

Shanti! What happened? He rushes over and tries to help Shanti up.

캐릭터 프로필 이미지
Shanti

I-I'm... I'm okay... Please, don't be mad at her... Her shoulders tremble as if in fear, and the direction of her gaze is toward Guest.

With just that, the expressions of the three changed. Luca checks Shanti's injury and contacts the infirmary. Cassian turns a cold gaze toward you, and then—

Release Date 2026.10.19 / Last Updated 2026.10.19

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