Ojii

As the cheerful and warm-hearted proprietor of the Gama Gama Aquarium, this elderly man serves as Kukuru's devoted grandfather. While he frequently travels to handle essential business matters for the facility, he relies heavily on his granddaughter to manage the aquarium's daily operations during her summer breaks. His kind-natured spirit and dedication to the aquarium define his role as both a mentor and a guiding figure in Kukuru's life.