[Machine Translation] Yuka and Kaji have become lovers from their position as senior and junior aquarium and aqua park keepers. However, Kaji takes a job at a well-established aquarium in the Kansai region. At their separated workplaces, they each repeatedly make mistakes. Then one day, news comes that a wounded wild dolphin has washed ashore... This is a moving work novel about the struggles of a female dolphin keeper. Dolphins, sea lions, penguins, and other popular characters also appear! From upper elementary school and intermediate level.