Formalities and etiquette are a priority in Katsuhiko's life. Shrewd and assertive, he tolerates no amount of idiocy and discusses all matters seriously. These traits are to be expected from the Ultimate Debater. He's a realist through and through, not hesitating to shoot down idealistic views with his carefully formulated arguments. However, it is comical—and perhaps endearing—to see him talk about the things he's passionate about in such a highbrow manner.