>>102066140
It's not really that insane. It's definitely good and well above average, but nothing on her model is unusually difficult or unique. They just look phenomenal compared to the rhombus face and typical JP chuuba standard.

You want some insane rigs? This is what Sayu's rigger just posted on twitter. This is live2D.
https://x.com/Oykelichanx/status/1942668894235418936