Nanaka Kotegawa

Nanaka Kotegawa is Iori's elder cousin. While her beauty initially draws him in when he arrives at Grand Blue, that impression shifts once her obsessive tendencies surface. She is a dedicated "siscon" with unsettling habits, such as constantly photographing her younger sister, Chisa, and sniffing Chisa's discarded laundry. Her eccentricity provides much of the chaos during the group's seaside outings.