Gaku is shown to be an extremely calm and laidback individual who rarely got agitated or angry, even during fights or life-and-death situations such as when he lost an arm during his encounter with Takamura. He often compared real life to a video game, describing a deadly injury as a "speedrun to death" or describing killing itself as a "game". His nonchalant attitude was shown on multiple occasions, such as when he ate snacks or played video games in the middle of a fight.