
52ヘルツのクジラたち is a bestselling novel by Sonoko Machida that won the 2021 Japan Booksellers’ Award Grand Prize. In March 2024, the story was adapted into a feature film directed by Izuru Narushima, who worked with LGBTQ consultants in order to portray a key transgender character with the same compassion and sensitivity expressed by Machida’s novel.
Kiko Mishima has left Tokyo to move to a seaside town near Oita on the eastern coast of Kyushu. She’s inherited a house from her grandmother, and she gets along well with the contractors she hired for renovations. It’s difficult to adjust to life in a small community, however, and Kiko begins to withdraw into her house.
During a trip to the grocery store, Kiko encounters a 13yo boy who can’t speak and seems to have nowhere to go. The nameless boy bears undeniable signs of abuse and neglect, so Kiko invites him home and begins caring for him.
As the novel progresses, the reader learns more about Kiko, who was emotionally abused by her mother and stepfather. Circumstances relating to her stepfather’s health prevent Kiko from escaping from her family after high school, and she’s driven to the verge of suicide by her experience of serving as her stepfather’s primary caregiver.
Kiko is rescued by her high school friend Miharu, who also grew up in an abusive family. Miharu introduces Kiko to her colleague Ango, who sympathizes with Kiko and takes responsibility for her emotional support as he helps her move into a sharehouse and begin a new life.
From the beginning of the novel, the reader is confronted by numerous questions. Given how important Ango was to Kiko, what happened to him? Why did Kiko suddenly move to Kyushu without telling anyone? Where is she getting the money to renovate her house? And, most importantly, what can she do to help the abused boy whom the entire town has decided to ignore?
52ヘルツのクジラたち takes its title from the story of 52 Blue, a whale of an unidentified species that has never been sighted but only heard via hydrophones. It sings at a frequency 52 hertz, which is much higher than the calls of other migrating whales. Because of the highly unusual sonic signature of its call, the whale migrates alone.
Kiko compares her isolation during her childhood to that of the 52-hertz whale, and she once listened to recordings of its singing to calm and ground herself after she left her family. She shares these recordings with the seemingly wordless boy she takes under her wing, promising that she’ll wait patiently until she can understand his own 52-hertz voice.
We live in a society, however, and it’s not strictly legal to assume care of a minor without the permission of the child’s guardians. Thankfully, Miharu manages to track down Kiko and pays her a visit in Kyushu. She once again comes to the rescue, helping Kiko to reach out to the community for the support that she and the boy desperately need.
Make no mistake, 52ヘルツのクジラたち is an intensely melodramatic novel. Its characters are either saints or devils. It’s never explained why anyone would be abusive toward a child, or why most people who witness child abuse choose to ignore it. In addition, the story’s victims of abuse come off as perfect angels who suffer with dignity and almost never display any of the problematic behavior associated with a history of sustained childhood trauma.
I find this lack of psychological depth frustrating, as it glosses over many of the issues underlying child abuse, which is often known and tacitly tolerated by the larger community. Instead of serving as a meaningful model for how such abuse can be prevented, this novel feels more like a character drama that uses serious social issues for the sole purpose of generating heightened emotions. In addition, although the treatment of the central transgender character is sympathetic, I couldn’t help but shake my head at some of the tired narrative tropes applied to their story.
Still, I can’t deny that 52ヘルツのクジラたち is a lot of fun to read. The pacing is excellent, and I was swept along by the story’s strong forward momentum. Although bittersweet, the ending is emotionally satisfying, as is the conclusion of Kiko’s character arc. I’d especially recommend this novel to fans of Banana Yoshimoto, as it feels like a progressive development of many of the themes explored in Kitchen, from a universal concern with love and loss to a more specific push for the legal rights of minors and transgender people.
While the message of 52ヘルツのクジラたち might have benefitted from more psychological nuance, Sonoko Machida makes a strong and compelling case for mutual aid and community action in which everyone in a society benefits by actively protecting the marginalized.

