The order of operations is what makes Olivia Lin worth a second look, not the model humming underneath her. miHoYo put the character on Bilibili in August 2025 as a young pianist, gave her motion capture, synchronized lip movement, and a deliberately grounded look, and let her build a following and answer letters for months. Only later did the app she fronts arrive.
That app is BSide: Olivia Lin, released into Steam Early Access and listed not as a game but as a Free to Play utility. According to TechNode, it bundles three things: you can watch Olivia perform piano pieces, upload your own MIDI files and generate animated performance videos, and write to her through a letter-based chat where she replies in character. She can also sit on your Windows desktop as a live wallpaper. The character herself is a Shanghai student majoring in piano with a minor in psychology, fond of vinyl, old films, and rainy days. PC Gamer noted the melancholy hook baked into the writing: she is framed as an eternal student who will never actually earn her degree, an arc engineered so it cannot resolve.
The bookmark that sent me here, from Jon Lai, reads this as a template. Character-first AI with a distinct personality, recognizable identity, and world-building beats faceless agents, and he calls it the way. I think he is onto something real. A companion product lives or dies on whether you believe there is somebody on the other end, and pre-seeding that belief on a social platform before you charge anyone for it is a genuinely smart move. Building the relationship first and the software second inverts how most of these things get made.
Two numbers in that same post I am not willing to repeat as fact. The claim of 100,000 downloads on day one does not appear in any news coverage I could find, and it is not something I can pull from SteamDB. The claim that hundreds of thousands follow Olivia on Bilibili is asserted without a link to the account or a follower count. The August 2025 debut on Bilibili is confirmed by TechNode. The scale of that following is not. Treat both figures as the poster's claims, not verified data, until somebody produces the page.
The reception the coverage did document is less flattering than the pitch. TechNode reported that many people downloaded it expecting a new miHoYo title and found a utility app with no story and no gameplay. The Early Access build drew complaints of formulaic letter replies and audio-video sync bugs when generating videos from certain MIDI files. It requires a miHoYo Pass login. And some users asked the question that matters most: whether the thin content makes this less a finished companion and more a platform for collecting conversational data to train models. That last worry is not paranoia. It is the obvious reading of the incentive.
Look at the frame around the app and the incentive gets sharper. miHoYo announced plans to invest up to 14.6 billion dollars into AI over three years, saying it would prioritize AI as a central and primary means of problem-solving, per reporting from Esports.gg and NewGameNetwork. The studio has stated for years, as Game World Observer covered, that it wants to build a virtual world connecting roughly a billion users by 2030. Olivia is not a side project. She is a low-cost, high-frequency way to learn how people talk to a character they have been trained to care about, and to keep them opening the app to do it. The letters are a lovely ritual. They are also a data pipe, and the affection is the funnel.
None of that makes the design cynical by default. Parasocial attachment is old, and dressing it in a pianist who loves rainy days is more honest than pretending an agent is a neutral tool. What I would hold onto is the gap between the marketing sequence and the shipped thing. miHoYo has proven it can manufacture a following for a person who does not exist. Whether it has built something that fabricated following will keep writing to, once the novelty of a desktop pianist wears off and the replies still feel formulaic, is a separate question, and the Early Access reviews suggest the studio has not answered it yet. The playbook is real. The product, for now, is a mood board with a login screen attached.