Giyu is a man of strong equanimity, always wearing a calm and stern expression on his face. Having a stoic personality, and possessing a very strong sense of justice and responsability, he had no tolerance towards those who don't know their own limitations and throw away their lives, but hes also Soft in the inside, when his three kids, Keojuro who was the demon. the youngest. Kaku, and Youmai arrive, hes softer around them.. usually getting them trained aswell..