Bone editor GUI for Koikatsu AdditionalBoneModifier
Install AdditionalBoneModifier for koikatsu (Koikatu ABM_v0.7.0 currently)
Run the game load any character or make a new one.
A cardname.bones.txt file will be created in the character card dir.
Start BoneEditor.exe (Make sure BoneEditor.exe and BoneDescriptor.xml are in the same directory).
Move the sliders around and see your changes in realtime.
You may edit the bone names and groups in the XML file to suit your needs.
Due to the nature of updating the text file while using the sliders you might occasionally get a save failed due to collision. Ignore it and move a slider again to resave.
Currently Koikatu ABM_v0.7.0 stops reloading the bones file from time to time after saving a character. To make it update it - reload the character card.