Arashi mentions two movies, Gion no shimai (The Sisters of Gion) and Naniwa Elegy, both from 1936.

I cannot tell how iconic the stills are. They may be recognizable to any Japanese who studied in school, or perhaps to Japanese film buffs only. Funnily enough, Arashi says "Gion no kyodai". Her 50-year-old memory is not what it used to be, I guess.

Arashi's movies were easy to find, but what did Jun see? It's a Type 61 tank surrounded by a group of young people, three or more girls among them. It looks more specific and Japanese than his other idea that looked like a hybrid of Chuck Norris and Silvester Stallone in "Missing in Action 7: The Endless Franchize".

UPDATE: Reader Robert Miyahara writes regarding "Gion no Kyodai":

Arashi is correct. きょうだい is an acceptable reading of 姉妹. According to the Japanese-language Wikipedia, as well as the current DVD cover, きょうだい is the official Japanese reading of the title. You can see that the photo-in-question is used on the current DVD cover, and if you squint, you can make out the 「きょうだい」on the cover, to the right.

Indeed the cover is quite readable. It's just that someone at IMDB thought that he knew better.

UPDATE: The tank is from Seven Days War.