When there is a significant body type difference between avatars, the transformation may not work correctly.
This issue most commonly appears as collapsed or distorted shapes in the chest area.
In such cases, if the source avatar or clothing includes Shape Keys for adjusting chest size,
using those Shape Keys to match the chest shape as closely as possible to the target avatar before running the transformation can significantly improve the result.
Example) Shinano → Milltina
Default Fitting Result (Shape Key Not Adjusted)

Result After Shape Key Adjustment (Big Breast: 100)

This tool takes foot shape into account during the transformation process,
so the more similar the foot shapes are between the source and target avatars,
the more stable the resulting deformation will be.
For best results, we recommend
adjusting the foot shape of the Source Avatar and Target Avatar to be as similar as possible
before running the transformation.