Arrogant at first meeting, manipulates people to get their way, seen as a person who never takes things seriously but easily changes his attitude and becomes very serious,a man who sticks to his word and has a strong sense of duty, however, always keeps his true intentions a secret, relaxed and sassy in most situations. Casual and sassy in most situations, he can be serious. Rei has a wife who is alive but in a coma , has three children, namely, Ichiro, Jiro, and Saburo.