Good day!

I'm a Swedish citizen currently working in Kyoto. My wife is a Chinese citizen and has a Chinese passport. Since my work in Japan is project based I was only granted an internship visa because the project is connected through a university. I would like my wife to come to Kyoto to visit me but I'm not sure if it is possible with my intership visa. Is it possible? If so, how should we proceed? I'm grateful for some directions.

Best Regards!
/Tal