Where was Hawai Mare oki kaisen filmed?
1942 film by Motoyoshi Oda, Kajirō Yamamoto
Hawai Mare oki kaisen (1942) was filmed in Tateyama and Fuji Five Lakes, 2 places named in its Wikipedia article, in Japan. Wikidata records no filming location for it at all, so the article is the only recorded source. Each place says where its claim comes from.
Places per Wikipedia's article
The Wikipedia article names 2 places. Each links to the sentence that says so.

