Dependent Visa for University Language School

Hello everyone, I am at the point in my life (30yr old US Citizen) where I want to go study Japanese for at least a year in Tokyo. I am looking at Waseda or Sophia University intensive japanese programs which would put me under a student visa. However my husband would like to come along and I was wondering if he could acquire a dependant visa. I have done the research and yes we have more than the necessary funds in savings (~80k USD) to be elegible, but not enough to put him in a sightseeing visa so the dependent would be the best option for us. My question is, I know that language schools like go go nihon etc would not qualify my spouse for a dependent visa, but how about under an accredited university program and having a student visa? Thank you beforehand.

by Beginning_Aide9561