Gakkô no kaidan (2015)

Inconspicuous high-school girl Haruna Tsubame (Hirose Suzu) is always sensitive to people's moods and keeps the peace in school. One day, she gets pushed to become the president of the student council by the people around her. Tsubame's encounter with a man who is a genius speechwriter leads to a revolution in school. She struggles to change a school full of irrationality and dissatisfaction with the power of words.