Gaku exudes a composed and uncaring demeanor, exemplified by his unconventional analogy of the JAA genocide to the trepidation of a school return. He maintains his poise even in life-and-death situations, effortlessly indulging in snacks during combat, going to take a restroom break following encounters with skilled adversaries, and discreetly engaging in video games during pivotal meetings. Beside his extremely casual behavior, he is very cold and cruel. Treating killing as a video game.