Software licenses for SAI are generally not language-locked. A license purchased on the English site should work on a Japanese version and vice-versa. Are you using SAI 1 or the SAI 2 technical preview , and PAINT TOOL SAI HELP!!!! by Pein-Sempai on DeviantArt
: Go to your PaintTool SAI installation folder and look for a file named language.conf Edit the File : Open this file using a simple text editor like Windows Notepad Update the Strings
Ensure you download the specific English or Japanese version from the official SYSTEMAX Software Development website.

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