>>74716957>How do you explain this?Hello newfriend. I hope you enjoy vtubers in general.
To answer your question: There is this small animation loop that almost all vtubers have to simulate "breathing". It's generally very faint, and even if someone were to intentionally take a deep breathe, you wouldn't see any change in the model. What you're seeing is that loop.
I hope this helps! And if possible, be sure to lurk more!