Mizuki Inaba (稲葉 瑞樹 Inaba Mizuki?) is a fellow classmate of Kaname Chidori who initially blames her for having stolen her boyfriend, but she becomes one of her closer friends later on in the series. Mizuki is easily infatuated with various men, who usually take an interest in Kaname instead.
- The name Mizuki means "felicitous omen, auspicious" (瑞) (mizu) and "tree" (樹) (ki).
- Mizuki's surname Inaba means "rice plant" (稲) (ina) and "leaf" (葉) (ha/ba).