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MiHoYo's AI Companion 'BSide: Olivia Lin' Lets You Make Music Videos from MIDI Files

MiHoYo, the studio behind blockbusters like Genshin Impact, has quietly launched an early access version of its AI companion software, 'BSide: Olivia Lin,' on Steam. But don't expect another action-packed RPG—this one's a different beast entirely.

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An AI Companion Who Can Play Piano

The star of the show is Lin Li, a Shanghai girl who majors in piano and minors in psychology. She loves vinyl records, old movies, and rainy days, and she's currently researching the link between music and memories. Users can watch her perform piano pieces, each one reflecting her take on music and memory. But the coolest part? You can upload your own MIDI files, and the system will automatically whip up a music video to match.

Beyond music, you can chat with Lin Li, write letters to her, and share your thoughts. She'll respond in character, making each interaction feel personal. The app also includes AI-driven music creation, MIDI and audio generation, and text generation. You can generate music, audio clips, creative suggestions, and even letter texts by typing in prompts or selecting materials.

The Character Was Foreshadowed, Pre-Release Experience Collects Feedback

Lin Li didn't just pop up out of nowhere. Her Bilibili account, 'Lin Li Olivia,' has been posting piano performance videos since August 2025, and earlier this year, she started sharing videos of her reading and responding to letters. This early access release is a chance for the developers to gather user feedback and fine-tune the experience.

Key Points

  • 'BSide: Olivia Lin' is an AI companion app, not a game.
  • It features AI chat, music generation, and dynamic wallpapers.
  • Users can upload MIDI files to create music videos.
  • The character Lin Li has been built up through social media since 2025.
  • The early access aims to collect user feedback for further improvements.