That sounds very complicated, even in it’s simplest form (highly stylized and without hands).
But it’s probably just going to be manual animation; I don’t think you will be able to use Physics Simulation (like Rigid Body and Cloth) or so, to your advantage in a case like this, but I’m not sure….
It might just boil down to looking at video reference and start setting Keyframes (you’ll also need a good Rig on the belt, of course!).
