Idol/actress Yui Aragaki (also known as "Gakki") will be making her movie debut as the female lead in "Waruboro," an adaptation of Gets Itaya's semi-autobiographical novel. Aragaki will take on the role of Yamada, a pure and diligent student. She is the classmate and love interest of the main character, a rebellious delinquent called "Ko-chan" (played by Shota Matsuda).