I'm curious about that, too. I really haven't seen anything definitive about this subject.
In Los Angeles' Litttle Tokyo, there is a statue of Sugihara Chiune, He was a Japanese Diplomat stationed in Lithuania who with his wife Yukiko is credited with saving over 6000 Jews from the Holocaust. The Japanese government dismissed him for his actions and he spent two years in a Romanian prison. After the war he seemed to muddle through a succession of odd jobs, somehow disgraced and tainted by his dismissal from his previous job. Recognized by Israel as Rightous Among Nations, and by several books in English published in the United States, Sugihara remains obscure and forgotten by the Japanese.
I don't believe the Japanese shared Germany's anti-Semitism, but I don't think they cared much anyway. Germany and Japan made strange allies. They didn't cooperate much, and actually worked across purposes in Russia.
I would appreciate any more information about this topic from Japan. Anybody?