English - grasp the ass
The software I am using cannot use physics like the soft body simulation in Blender.
I have to use another method to simulate the body.
The mesh resolution in the buttocks area is low to begin with, and if the buttocks are made huge, the spacing between the vertices will be even farther apart.
In the case of mesh deformation, it is difficult to deform the mesh into the intended shape because it can only be deformed vertex by vertex.
So, I tried to make the waist part higher resolution by subdividing it in Blender.
Fig1. base figure

Fig2. shape applied

Fig3. HD geograft

Fig4. poke ass wireframe view

Fig5. poke ass normal view

Lv1. nothing changed

Lv2. SquishyHumanBody(1x faces) + dForce simulation + MeshGrabber
Large areas are heavily deformed. This is no way to get the fingers up the ass.

Lv3. FenderBlender(4x faces ) + SmoothingModifier + MeshGrabber
The resolution is high enough to deform the image into the intended shape, but the problem is that I can't use my usual pussy.

Lv4. HighResHipGeoGraft(16x faces) + SmoothingModifier + MeshGrabber
not bad

https://mega.nz/file/9oUmjIqJ#pAxmBu684qGDIZPC2D3tQepFHkpmIbuAcn2s2QO-66w
https://mega.nz/file/QpcGRbpC#z3v8lhw6AXZnd5xYr286XvmIgDMClC3q57cIBIA9UtY
https://mega.nz/file/k9EgjIaI#6htXCoXGuPFENdpB-8CGJ8DvS_eMU1wZARjxY7_t1NM
https://mega.nz/file/Iw0C1I7Z#sv_qaXxHRbJF2c_Da_NKwYeCQ_YnDz68C3mXsWbJwuw
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