Omg what a film.
I've put Japanese film in the title to differentiate it from the film about Aileen Wournoss starring Charlize Theron.
This is one I need to watch again, because the way it was structured (which is really clever) has left me still piecing bits together.
I went to see it with a friend, which I would recommend, as getting someone else's perspective on it can help piece some bits together. I connected some things that she hadn't and vice versa.
It's a really clever film about how events can be perceived. I'm not going to say any more, as I don't want to give any spoilers. But I highly recommend it.
I'm not sure why Perfect Days got into the oscar nominations for best international film rather than Monster. I enjoyed Perfect Days, but it doesn't have that impact that Monster has, imo.