sure, I use koikatsu and srpg studio.
You can't transfer 3d models into the engine, but it does accept pictures. So for the characters them selves I download the character cards on to a background remover site and transfer them as jpegs. Meanwhile with the koikatsu studio I just export pictures of the scenes. Beyond that I just crawl through srpg studio resource sites for things like skill codes and sprites, and use royalty free assets where necessary.
If you post your game let me know!