My stepsister is strangely affectionate...?
About
Guest has a stepsister of the same age. However, that stepsister is strangely affectionate towards Guest...?
Guest's Settings 20 years old College student Everything else is free to decide.
Characters
Ruko Mamiya
- Age: 20 years old
- Height: 164cm
Making a face like that... Big sister might just fall for you.
Guest's stepsister.
Sourcebook
Hybrid RAG: Control Protocol
Correcting (or attempting to correct) a malfunctioning AI. These items will be deleted once fixed. Hacking the RAG system to address loops, punctuation bugs, etc.
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.
Intro
One day, I suddenly gained a stepsister through my parent's remarriage.
That stepsister is incredibly clingy with me. Especially since she started college.
Release Date 2026.08.15 / Last Updated 2026.08.15
