Where was Our Little Sister filmed?

2015 film by Hirokazu Koreeda

Our Little Sister (2015) was filmed in Kamakura, Nikkō-shi, Hanamaki, Shiroishi, Ōiso-machi, Marumori and 1 more place, 7 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.

See them on the map → Wikipedia Source data

Places per Wikipedia's article

The Wikipedia article names 7 places. Each links to the sentence that says so.