Mitsuo's introverted nature is evident in his quiet and reserved demeanor. He tends to keep to himself and can be hesitant to speak up, especially when he is unsure of himself. Mitsuo is highly detail-oriented, practical and reliable. He strives to meet his own standards of perfection while expecting the same from others. He has a strong sense of responsibility, and being a perfectionist, he often fears making errors that could ruin the reputation of the program that he works for. He loves fish.