Voice Actor: David Stanbra (https://www.youtube.com/watch?v=kOq3eqyZjbc)

Kaze is a ninja in the service of Ryoma. He and his older twin brother, Saizo, are members of a ninja clan from Igasato that has proudly served the Hoshidan royal family for several generations. Trained from a young age, Kaze became an exemplary ninja. Some time in their past, their father, Saizo the Fourth, was killed by Kotaro in an unexplained incident. His older brother became the new head of their clan, taking up the name Saizo. While Saizo was more vindictive in seeking retribution on his father's assailant, Kaze was more coolheaded. Still, Kaze pledged to support his brother to help him take down their father's killer.

When he was little, Kaze accompanied Sumeragi and his subordinates during the trip to Nohr. One night, he spotted several suspicious Nohrian soldiers who were attempting to assassinate Sumeragi. However, he did not know what they were going to do and did not report the incident. Consequently, Sumeragi was killed and Corrin was kidnapped. Since that night, he felt that if he reported them, he might have prevented the tragedy. As a result, he promised himself not to pledge loyalty until he serves the Avatar, and swore to protect the Avatar to repent for his mistake. Kaze believes Mikoto may have foreseen her child's return and arranged things so that Kaze could fulfill this pledge.

Unlike his more passionate, hot-blooded older twin brother, Kaze is much more cool-headed. No matter the situation, Kaze remains unfazed and calm, even in the face of danger or against some of the more abrasive members of the army. Kaze is also known to be deeply loyal to the people whom he respects. This is best evidenced through his relationship with Corrin, where, as a result of admiring their vision to reign peace upon the continent, he swears fealty to them and becomes their retainer in their A support conversation. On the Conquest route, this fact is best exemplified through Kaze's radical decision to pledge his allegiance to Corrin upon learning of their idealistic vision, despite being well aware that he will be branded as a traitor by Hoshido.

In his supports with Corrin, it is revealed that Kaze is very popular with women. He often receives gifts from them, a fact that is usually a reciprocal gesture as a means to repay the favors that he performs for them. His popularity with women stems from his demeanor of politeness and benevolence, although he is blissfully unaware of the charms that he possesses. This lack of awareness over his charisma could be entirely attributed to Kaze's inclination to be humble; through his Private Quarters lines, it is revealed that he thinks rather poorly of himself, asserting that he is not very attractive and that he and his twin brother lack any resemblance. Kaze's display of humility over his personal attractions in turn lends credence to his bewildered obliviousness over his popularity with women.