A 14-year-old schoolgirl at Public Yotsuba Junior High School. She adores dancing and is a big fan of the dancing unit "Trinity". She also dislikes sports and studying. She is being taught dancing by Miyuki, the leader of dancing group "Trinity" (Miyuki decides to teach her as thanks for saving her in ep one), whom she admires. She later forms the dance group Clover with her childhood friends, Miki and Inori. Later Setsuna joins the Group.