Otome no Sainou

A 14-year-old girl named Nakanishi Kiyoshin, known as Onii-chan, is a chivalrous figure who intervenes when a boy becomes aggressive during a romantic confession to another student, Kashiwaki Sachikana. The two later become friends. In another story, a girl who was once helped by a boy in elementary school now serves as her middle school's president. She encounters a sorcerer named Lu who is trapped until the next full moon, while facing disdain from her classmates. Meanwhile, Ebisukumo, a boyish and wealthy girl, must find a suitable boyfriend to avoid being sent to study abroad. She makes a deal with the cold-hearted top student, Ninsei, who agrees only if she acts like a proper lady.