A former student of Raira Academy, moved to another high school last semester because of the rumor that she and Nasujima are dating. Her father, Niekawa Shuji is a reporter working for a small magazine.

Spoiler

Niekawa Haruna, who hosts the daughter blade of Saika, falls in "love" with her teacher Nasujima Takashi. She is caught trying to injure Nasujima with Saika's daughter, and afterwards has to transfer to another high school in West Ikebukuro.