Simple but Uncommon hand movement

I am trying to make an arm reach and stretch to a specific point, similar to the effect seen in this video: [https://youtu.be/gYHozPnLNVQ]. However, standard scaling does not produce the desired result. Is there a way to achieve this effect, possibly using a soft body simulation or another method? Any insights would be appreciated

You could try

line renderer(simple) or

2d sprite shape or

some other Bezier curve + shader,

there might even be vector graphics solutions(sprite shape is basically bezier curve + any graphics iirc)

too extreme for this imo, the video probably uses line renderer and shakes the middle points a bit on attacking

Cheers