The book follows Ayako, an 8-year-old Japanese girl living in Karafuto at the end of the war. In the autumn of 1946, Soviet authorities ordered her family to evacuate within 24 hours. With little time to prepare and unable to take most of their belongings, Ayako buries her favourite teacup -- decorated with a rabbit -- in a forest, hoping she will one day return to retrieve it. The story then moves forward several decades to the autumn of 2025. Ayako's granddaughter, Fumiko, travels to Sakhalin with her parents. There, she befriends a local Russian girl named Marina. When the two girls part, Marina gives Fumiko a necklace made from a ceramic shard she had found on the shore and kept as a treasured object; the fragment bears the image of a rabbit. After returning home, Fumiko shows the necklace to Ayako. At the sight of the rabbit, Ayako's fingers tremble as she recognises the design. The book was published by the St. Petersburg-based publisher Polyandria. In a statement, the publisher described the work as portraying personal histories within a broader historical context, adding that the writing was carefully considered.