There is trouble afoot at Koua Academy, home of an intellectually elite selection of students and teachers. The mysterious S-Class is not only the best of the best, but the superior force behind the actions and administration of the entire school. However, a recent chain of suicides has raised the attention of more than just the media. Weiss must band together for one last mission: to hunt down the evil mastermind responsible for the suicides and secret experiments at Koua Academy: Epitaph.