Tougou Haruna is the younger sister of Tougou Masakazu of Class 2-D. Evidence from the Manga shows that she is in the same class as Tsukamoto Yakumo and her close friend Inaba Miki. Like her older brother, she displays a high level of elegance and likes to do things her own way. As of Episode 3 of the 2nd Term, she does not yet have a speaking role.
She also appeared in School Rumble season 1 episode 21 with her close friend Inaba Miki.