character's breasts abnormally sagging

[ps321]

Koikatsu Sunshine was recently updated, but after loading cards into the character editor, the characters often have one or both breasts sagging.

Screenshot-2025-11-29-034434 hosted at ImgBB

Image Screenshot-2025-11-29-034434 hosted on ImgBB

ibb.co

I really don't know how to upload pictures to this forum.

 

[ps321]

Okay, I'll try to find the problem directly. The most likely issue is BreastPhysicsController.
After removing it, the character displayed correctly when I restarted the game.
But perhaps I didn't do the prerequisites for the plugin correctly.
Although I followed his instructions to complete the update and it started normally, so the prerequisites should be fine.

 

[ps321]

When I use the character editor with the plugin installed, the character still sags, but after saving the character card again and reloading the game, the character displays normally. However, the plugin will then be unable to correctly save the chest physics to the card.
It could be a problem with the plugin itself, or it could be conflicting with other plugins. Has anyone else encountered the same issue while using KKS or KK, or has anyone used them without experiencing the same problem?