BSide: Olivia Lin – Interactive Music and AI Companion

About This Mod

Introduction
BSide: Olivia Lin is an interactive music and companion application developed by miHoYo, launched on Steam in July 2026 . Unlike traditional games, the product is a free early-access software classified as a "utility tool" on Steam . The application centers on Olivia Lin, a university student from Shanghai majoring in piano and psychology, who lives in a digital space on the user's desktop .

Features and Interaction
Music and Performance

The music feature allows users to watch Olivia perform piano compositions from a library divided into classical, ACG (including miHoYo's own game music), and light music categories . During performances, she demonstrates detailed realistic animations, with her body and fingers moving in sync with the music . Two camera perspectives are available: a focus on the playing, and a view where she makes eye contact with the viewer .

MIDI Upload

Users can upload their own single-track piano MIDI files to the system, and Olivia will "perform" the piece, generating a corresponding animated video . For best results, files should be piano-only, under 1MB, and under 10 minutes long . The feature allows musicians to hear their work and see it presented through an animated character .

Letter System and Desktop Experience

The application includes a slow-paced letter-writing system rather than real-time chat . Users write letters sharing their thoughts, emotions, or ideas about music, and Olivia replies within minutes, maintaining her established persona . Users are limited to sending three letters per day . The application can replace the user's desktop wallpaper with Olivia's environment, providing direct access to piano performances without opening the full interface .

Technical and Development Context
The application requires Windows 10 1809 or later (64-bit), a quad-core Intel or AMD processor with SSE4.2 support, 4GB RAM, and approximately 6GB storage (100GB recommended for the full music library) .

The character was gradually introduced over nearly a year before the application's launch, with the "林离Olivia" Bilibili account posting piano videos since August 2025 . The product is currently in early access, and miHoYo is collecting feedback to optimize the experience . It achieved a "Very Positive" rating on Steam shortly after launch .

Frequently Asked Questions
Q: What is BSide: Olivia Lin?
A: It is an interactive music and companion application, not a traditional game, featuring a virtual character who plays piano and exchanges letters with users .

Q: Is the application free?
A: Yes, it is currently available as a free early-access software on Steam .

Q: What can I do with Olivia?
A: You can watch her play piano, upload MIDI files for her to perform, write letters to receive personalized responses, and use her as a desktop wallpaper .

Q: Can I chat with Olivia in real time?
A: No, interaction is through a letter system rather than instant messaging, creating a slower-paced communication experience .

Conclusion
BSide: Olivia Lin is an unusual product from miHoYo, focusing on music, atmosphere, and measured interaction rather than gameplay. Its detailed character animations, music library, MIDI support, and desktop integration provide a distinctive experience. The product is in active development, and additional features are anticipated.

Creative Team

Community modders have created this amazing content to enhance your gaming experience.

Compatible Platform

Works on PC. Check system requirements before downloading.

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