This feature applies to the XR Girlfriend.
I have created four different sitting poses and applied IK to adjust the feet heights.
This was an interesting subject. And it was unexpectedly difficult. It took me a long time to complete this.
This difficulty must be related to my previous job description in the game industry. I used to make 3D editing tools for the most part of my life. So I easily figure out how to create pose-editing features.
But I rarely worked on any game logics before. So I am having more difficulty in such.