In contrast to his brother Kaze, who is very calm, Saizo is brash and temperamental. He also becomes very frenetic when provoked, experiencing tremendous surges of passion that compel him to behave irrationally. This fact is made particularly evident in Chapter 17 on the Conquest route, where Saizo, guided by his feelings of seething hatred towards Kotaro, blindly throws himself into the heat of battle in a bid to exact vengeance on the man responsible for his father's demise.