While not overly engaging, this book still provides some useful insights into recent situations in Japan. In America, divorce is far from welcomed, but children with divorced parents are still accepted by society and their peers. In the novel, Megumi's parents choose only to separate, despite the extreme misery her mother finds in her marriage and the fact that her father has already had a new girlfriend for quite some time. They do this because divorce is extremely rare in 1975 Japan; in Megumi's class, only about three children live in homes without both parents, and only one of those children is in that situation because of divorce. According to Megumi's paternal grandmother, divorce would be shameful to their family, more shameful than the fact that her father has a girlfriend.
In addition to this, the book also discuses medical treatment for injured wild birds. It doesn't go into enough detail to be considered a how-to manual applicable to real life, but it still talks about things like the risk of domesticating a wild bird if you coddle it too much while it's healing. Several species of Japanese birds are also mentioned and discussed briefly, like the Japanese waxwing, which migrates to Russia each year.
Gender roles are also mentioned several times in the novel when Megumi discusses the differences between the way she is expected to behave as a girl and the way her male friends and neighbors are expected to behave. Despite this, a pleasant conclusion reached at the end of the book is that she isn't doomed to be dependent because she's a girl; as long as she has friends who are able and willing to help her, she can succeed where she had previously thought she'd already lost.
Overall, the writing of this book was decent. It was not overly engaging, and the lack of depth given to recurring characters like Kiyoshi was somewhat disappointing. However, there was still some enjoyable growth for the main character, Megumi, as she learns to assert herself instead of meekly complying with everyone's wishes. Dr. Mizutani, the woman who helped her change, was a very interesting character and sounded like an enjoyable person to meet. Despite hardships in her past, she was still hardworking and kind, and she worked her hardest to make it possible for Megumi to see her mother again.