Hazuki Shinonome

Hazuki Shinonome (東雲 葉月 , Shinonome Hazuki) is a 23-year-old teacher at Takafuji Academy, the adviser for FRC and the older sister of Satsuki Shinonome. She secretly loves Yūki Ōjima. She initially believed she was the daughter of her father's first wife, but she later discovers that she is in fact the illegitimate daughter of her father's then-mistress as her father's first wife later dies and he marries his mistress, who later gives birth to Satsuki. Upon realizing this, Hazuki became depressed and left the family.