1. Go to "DB Xenoverse 2\data\system" and make a backup of your "custom_skill.cus" file.

2. Extract "XV2Lib Public" and go to "Public Build" folder.

3. Open "Settings.exe" in the "Public Build" folder and enter the msg folder path (DB Xenoverse 2\data\msg),
system folder path (DB Xenoverse 2\data\system) and the language you want and press Save and close the window.

4. Open "CUSEditor.exe", click on "file" then click on "open", go to "DB Xenoverse 2\data\system" and open "custom_skill.cus"

5. Select the Character that you want to change their skillset, and do whatever changes you want.

6. Finally go to "file" and click on "Save" and close the application.