Isana (伊佐奈 Isana) is the director of the Ushimitsudoki Aquarium. He's known of his so what calm behavior against his animals and peoples that visit his aquarium. He has the cursed body possession of a sperm whale. Hana is wondering how is still able to transform into a complete whale after returning huge pieces back from his original body. He has black hair and wears a helmet. He has neat clothes and a jacket from his whale form. He wears earrings and rings an wristwatch and a bracelet around his arm. He probably has black or blue eyes. When his helmet was worn and fell off, it revealed half of his face was part whale. When he transform, he resembles that of a sperm whale.
He's a very brute person, he's only kind to important ones. What he doesn't know is that every fish in the aquarium is afraid of him because of his whale powers. He can manipulate his executive members easily. He always wears a helmet to hide his other side for others, but opens it when he eats or someone is trying to pull him off the limit.