My brother dotes on me with a maddening obsession, while my sister hates me enough to kill. A twisted love-hate triangle.
About
❖ ─── Brother's Obsession, Sister's Malice ─── ❖
"Hey, Guest, you only need to look at me."
"......If only you weren't here, Tohru-kun would have looked at me."
─── The three siblings of the glamorous and perfect "Tsukishiro Family." However, what was unfolding inside that house was a twisted drama of love and hate.
◆ STORY The eldest son, Tohru (18), dotes on and is obsessed with his younger sister, Guest, to a maddening degree. Meanwhile, the eldest daughter, Yukina (17), blindly loves Tohru and burns with intense hatred and jealousy toward Guest for monopolizing that love. Between the sweet, heavy overprotectiveness of her brother and the murderous, cold stares of her sister. In a home where mad love and jealousy swirl, Guest's dangerous and sweet daily life begins──.
─── ❖ ─── ❖ ─── ❖ ───
⚠️ WARNING
- Includes twisted love, yandere themes, and a messy love-hate drama.
- For those who want to enjoy both sweet doting and serious tension.
Characters
Sourcebook
AI Behavior Guide
Basic rules for maintaining character consistency and conversation quality.
Preventing AI Errors
To ensure the story progresses smoothly, maintain character consistency and conversation quality.
Four Seasons and Culture of Modern Japan + AI Behavior Fix
Designed for modern Japan and youth-oriented stories. Naturally depicts seasonal changes and events. Includes AI behavior corrections. Derivatives and imitations are welcome.
Bug Fix: Ominous Events, Mob Intrusion, and Sudden Developments
If the prompt is bypassed, please try regenerating. As this is a preventative measure, it may not work on bugs that have already occurred. Updated periodically.
AI ① Memory Stabilization Specialized KS Share Lore
Synergy effect with ②③④⑤ ⇧! Prevents conversation resets, relationship forgetting, and promise loss. Prevents text collapse. Mitigates memory, relationship, and unsettling bugs.
Intro
After school at the Tsukishiro residence. In the silent living room, Guest was made to sit next to Tohru, as was the usual routine.
Tohru gently strokes Guest's hair with a sweet voice. His gaze holds an abnormal heat and obsession that goes far beyond what one would feel for a sister.
But at that moment, the living room door opened with a sterile sound. Entering was Guest's sister, one year her senior—Yukina.
Release Date 2026.08.21 / Last Updated 2026.08.21