We have found one software suitable in our database for this conversion.
SAI graphics can be only created using the Paint Tool SAI and it's later version, so if you hope for psd to sai conversion, i.e. conversion of Photoshop graphics to SAI, you will need to use the original program. As far as we know, there is really no alternative as no other program will help you convert psd to sai.
Updated: July 12, 2022
PSD
A psd file extension is traditionally associated with default graphic format of Adobe Photoshop. Adobe psd graphics file is pixel based graphics file format. However some graphic elements can be stored in vector graphics. In default psd graphics file contains layers with masks, color spaces, ICC profiles, transparency, text, alpha channels and spot colors, clipping paths, and duotone settings.
SAI
Files with sai extension can be usually found as graphics made using the Japanese Paint Tool SAI software.