She's a graduate of the school and the former Newspaper Club leader. She rarely speaks and carries around a sketch book to write on instead of talking. She was the one who taught Ginei how to use a camera and stopped him from fighting everyone in his first year. She lives with Marin who found her after she had nowhere to go. She is a Siren who has a perfect song of protection. By the end of the Newspaper Club's Summer Trip, Sun has grown a slight attraction to Tsukune, much to Ginei and Haiji's disappointment.