[0.8.4b][Model] There's a seam in Juzi's abdomen model

[AlexYae]

Describe the bug There's a seam in Juzi's abdomen model. It can been found in any of Juzi's experiments.

To Reproduce Steps to reproduce the behavior:

1. Enter harem mode.
2. Perform any of Juzi's animations. (The following picture takes Juzi's experiment No. 606 as an example)
3. View of Juzi's abdomen from below.
4. See error.

Expected behavior There's a seam in Juzi's abdomen model. This can be seen in the screenshot and screen recording video below.

Screenshots

https://github.com/user-attachments/assets/d3a31f3d-2201-4b00-98f9-e21062d4b226