Well I run the ABC Transformer Tool and it did make the skin looks better, but still not good as there is some kind of "crack" in some places. Also when I view with wet setting 100% the game is crashed.it might be using the wrong skin texture, so you can swap the skin texture from any ayane costume, or even better, just run the costume through the latest version of abc tool. it will swap the texture for you, and fix the neck normals and gap if any (my blender neck fix tutorial isn't necessary anymore)
I give up, the mod isn't that good anyway (sorry gatto tom). There is still more mods for Ayane to use. Thanks bro for the help