This movie is harsh...REALLY harsh...Definitely don't watch this if you're feeling depressed. The main character, who has been dealt really bad and unfair cards in her life, and been abandoned by her parents, struggles with her everyday life, and working hard to take care of her little son together with her abusive, selfish, lazy, thieving, unsupportive boyfriend (the boy's father), even though she is only 17 years old. She faces one grim development after another in her life, and things just go from bad to worse...If you don't feel sorry for her over the span of the movie, you're not human imo.
The movie is based on a bunch of different real life stories from different people in Okinawa, but the story in the movie instead takes those bits and pieces and puts them together into a single made up story about a single made up character. I suppose the movie serves as a commentary about the social problems in Okinawa. I would have liked a more satisfying ending though. Also, while there aren't many of them, be warned that certain scenes may be distressful and hard to watch. Don't say I didn't warn you.