There is a subgenre of Japanese movies that target women of a certain age, typically 30 or over. These films aren’t purely romantic dramas, though the search for Mr. Right figures in many. Rather, their main theme is self-exploration. Naoko Ogigami was once a leading purveyor of such films, beginning with her 2006 hit “Kamome Diner,” whose heroine found contentment running a Japanese-style eatery in Helsinki.