In 2021 her novel 52 Hertz no Kujiratachi (lit. 52 Hertz Whales), a story about two troubled and isolated people who become friends that can communicate with each other despite their difficulties, won the Japan Booksellers' Award Grand Prize. The title of the story refers to a whale in the Pacific Ocean that calls at a frequency that other whales cannot detect. Writing for Da Vinci, reviewer Yuki Mita observed that the core lesson of the book was positive despite the difficult situations faced by the characters, and that the book provided encouragement for people to keep trying to communicate until they find someone they can talk to. In Real Sound, reviewer Ichishi Iida noted that the book had become a bestseller, and suggested that the story showed how Japanese society needed something like religion or another similar social force to generate and sustain relationships between people when other bonds fail. The book sold over 400,000 copies.
