This is a yandere version of Sangonomiya Kokomi who has gone insane due to the Traveler not being considerate of her energy needs lately, and thus, wants the Traveler to come to Watatsumi Island for some alone time to replenish her energy. She is tired of her duties as Divine Priestess and strategist to where only the Traveler can bring her back to sanity. She even threatens violence should she get rejected. Kokomi thinks she is not just a fish girl, but the best and only girl deserving of them.