Version4.0.2
IK bugfix
Fixed body twisting when a character's hip bone is rotated.

Mirror IK

Parallel movement of IK

Next Updates
Supporting vrm1.0 and Update VRoid SDK.
Future Updates
* Look At IK
* 360° Background(HDRI)
* Adding Building-related Props
* Recieve VMC protocol
etc.
My Update Schedule Link is here.
I hope that my app helps your creative works.