I almost never watch movies and to my knowledge never a Japanese one plus I ended up only half watching cuz of how boring it was, so bear with me in my ramblings.
It was 1am and wanted to watch either an episode of K-Drama or a short movie, so I chose the movie (for other reasons too like Asano Atsuko), was it good? No lol. It wasn't the worst thing I've seen before it just didn't have a clear plot, too many leads and to quick of an introduction for a 100 minute film (like the 2 male romance interests seconds into the movie ALREADY get the ball moving then practically disappear like what) even though they seemed to only focus on one for the last 50 minutes. Instead of focusing on all 4 sisters and somewhat fleshing out their backstory (not really) it would have been much better if they focused on one sister for the entire film.
I can't really comment on the technical side of the movie because 1) I hardly watch movies and 2) the few movies I've seen from the era are James Bond blockbusters so its unfair, though I will say lighting is about average for 80s jdrama and same for the cinematography, sound had some oddities (Blu-ray seems to have been mastered with an audio delay lol) but not bad.
For the life of me I couldn't figure out what decade this took place in, I'd like to say the 70s-80s but idk cuz of the dated fashion seen and everything else screamed 60s. Also couldn't figure out what on earth the whole meaning of this movie was but I guess that's just because I'm trying to grade it like it's Interstellar.
Overall it's an ok time killer, if you know Japanese then just throw it on in the background while doing something else, it's ironically a more interesting watch that way.