Dreams and reality of girls, loneliness and companionship, bonds and conflicts――. 18-year-old high school girl Umisakino Kukuru works at the small Okinawa aquarium, Gamagama Aquarium, where she meets former idol Miyazawa Fuka, who has fled to Okinawa after losing her place in Tokyo. Fuka decides to work at the aquarium with Kukuru during the summer vacation. Together, Kukuru and Fuka spend their days at the aquarium, each carrying their own feelings. However, a crisis of closure looms over the precious aquarium. This is an official comic adaptation of an animation depicting the dreams and reality of girls, loneliness and companionship, bonds and conflicts.