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姐姐是我的猫
My Sister is My Cat, a Japanese otome dating sim. You play a physics prodigy with severe androphobia — until her stepbrother becomes the only exception. Balance classes and social life, raise stats, romance three leads, unlock multiple endings. Your choice decides who stays.

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Features
Languages:
Interface Full Audio Subtitles
English Not supported
Simplified Chinese ✔ ✔
English language not supported

This product does not have support for your local language. Please review the supported language list below before purchasing

This game is not yet available on Steam

Planned Release Date: Sep 9, 2026

This game plans to unlock in approximately 6 weeks

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About This Game

My Sister is My Cat is a Japanese-style otome dating sim.

You play as the heroine, balancing academics and social life over four years of campus life. Raise your charm, fashion, and temperament stats — and meet three romanceable male leads: a gentle-yet-possessive top idol, a shy-and-sweet upperclassman, and a smooth-talking narcissist with a heart of gold.

Through classes, part-time jobs, dates, and seasonal festivals, you'll deepen your bonds and unlock multiple endings. Every choice you make will decide who stays by your side in the end.

System Requirements

    Minimum:
    • OS *: Windows 7 SP1 64-bit or newer
    • Processor: Intel Core i3-2100 or equivalent
    • Memory: 2 GB RAM
    • Graphics: DirectX 10 compatible (512MB VRAM)
    • DirectX: Version 10
    • Network: Broadband Internet connection
    • Storage: 500 MB available space
    • Sound Card: DirectX compatible sound card
    • VR Support: N/A
    • Additional Notes: 1280x720 or higher screen resolution recommended
    Recommended:
    • OS: Windows 10 64-bit
    • Processor: Intel Core i5-4460 or equivalent
    • Memory: 4 GB RAM
    • Graphics: DirectX 11 compatible (1GB VRAM)
    • DirectX: Version 11
    • Network: Broadband Internet connection
    • Storage: 1 GB available space
    • Sound Card: DirectX compatible sound card
    • VR Support: N/A
    • Additional Notes: 1920x1080 screen resolution recommended
* Starting January 1st, 2024, the Steam Client will only support Windows 10 and later versions.
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