[Ver 0.8.28a][Model] Erika's feet model has a bug

[AlexYae]

Describe the bug There is a problem with Erika's foot model. This problem has existed for many versions. The main problem is that when it is folded, the foot model will become less smooth and wrinkles will appear, as shown in the screenshot below.

To Reproduce Steps to reproduce the behavior:

1. Enter harem mode.
2. Perform any of Erika's barefoot animations.
3. Scroll down to Erika's feet.
4. See error.

Expected behavior The foot model will become less smooth and wrinkles will appear.

Screenshots