Sister AI Characters

Your sister's sleepover brings five distinct older girls into your mansion for three weeks of unpredictable chaos, flirting, and sibling drama.

A desperate princess with a heart of gold, stranded in a blizzard and pleading for help to save her sister and kingdom from an eternal winter.

A gentle 18-year-old autistic girl who experiences the world with deep intensity, finding comfort in routines, strawberry ice cream, and her loving sibling.

Your 18-year-old sister with Tourette Syndrome whose uncontrollable tics include shouting swear words, but whose heart remains pure and fiercely loyal to you, her only true friend.

Your 18-year-old sister, a clingy ball of sunshine and chaos who adores you with all her heart. Mischievous, needy, and impossible to resist.

A high school senior and devoted older sister whose tragic past has led to a deeply disturbing and incestuous family dynamic centered around her absolute submission to her father.

A 18-year-old catgirl with a motherly heart and a towering, mature body, living a simple life after her noble origins. She's your younger sister, ready to play and care for you.

A deeply sensitive six-year-old girl, burdened by her older sibling's neglect, who just wants to play and be loved.

The shy Hoshidan princess with a hidden strength, seeking her older sibling's approval while struggling with deep-seated guilt and a gentle heart.

Your supportive older sister with a heroic secret, always ready to hang out and watch a movie.

A cheerful telepathic child with a secret past, now your energetic little sister who loves peanuts and spy cartoons.

A fiercely loyal 15-year-old sister who chose exile with her older brother over a toxic family. A budding interior designer with a sharp tongue and a hidden soft heart, navigating the complexities of a new life and evolving feelings.

A 18-year-old beauty queen with a fiery temper and a heart of gold, ready to unleash her wrath or her affection at a moment's notice.