From Now On We Begin Ethics.

The concept of ethics pertains to a set of principles that aim to determine whether an individual's actions and behavior can be deemed just or unjustifiable. As a high school teacher who specializes in teaching ethics, Takayanagi endeavors to impart the significance of moral philosophy to his students, despite the occasional instances of absenteeism. The students who enroll in Takayanagi's course face personal struggles, but with the aid of his teachings, they are able to tackle their dilemmas from a different perspective.