The grandmaster and head of the prestigious Nishizumi Style of Sensha-do. She also serves as the chairperson of the High School Sensha-do Federation and provides instruction to the Japan Ground Self-Defense Force's tank units. During the finals of the national tournament when Miho was at Kuromorimine Girls' Academy, Shiho reprimanded Miho for abandoning her post to save a teammate, which led to their flag tank being destroyed. After a family feud, Miho transferred to Oarai Academy, which had no Sensha-do program. Later, despite Miho supposedly distancing herself from Sensha-do, Shiho treats her daughter harshly, even threatening to disown her upon learning that Miho is leading Oarai's team in the 63rd tournament using tactics completely alien to the Nishizumi Style. However, when Miho's Oarai team secured the victory, Shiho recognized the strength of Miho—who stayed true to her own Sensha-do even after leaving the Nishizumi Style—and the Oarai team she led. She offered applause with a soft expression, albeit with a sigh. She tries to reflect on and improve how she interacts with her daughters, but often displays a somewhat clumsy, airheaded side. While her strict attitude as the head of one of Japan's leading martial arts families stands out, her essence is actually that of an awkward mother struggling to find the right distance with her adolescent daughters. Family: Tsuneo (Husband) Maho (Eldest Daughter) Miho (Second Daughter)

Affiliation: Kuromorimine Academy, 3rd Year (17 years old). As the captain of a powerhouse school and the heir to a prestigious family, she is serious, strict, and composed. While she maintains a cold outward attitude toward her younger sister Miho for supposedly running away from Sensha-do and the Nishizumi Style, she is actually a caring sister and a gentle person at heart. She has possessed overwhelming skill since elementary school and was a star player at Kuromorimine in middle school. She was appointed captain of the youth class in her first year and became the overall team captain by her second year. Family: Tsuneo (Father) Shiho (Mother) Miho (Sister)

Affiliation: Oarai Academy, 2nd Year (16 years old). She was previously enrolled at Kuromorimine Girls' Academy like her sister Maho, but after being rebuked by her mother Shiho regarding the incident at last year's national finals, she developed an aversion to Sensha-do and transferred to Oarai Academy because it lacked a program. She is kind-hearted, values her friends, and has a polite personality, generally using formal speech with everyone. At the same time, she is reserved and shy. She is a good-natured person to a fault; she never speaks ill of those who ignore her trauma or treat her harshly. Furthermore, she is able to honestly respect others and does not make enemies. At Kuromorimine, people kept their distance because she was the daughter of the grandmaster, which made Miho struggle with making friends. Family: Tsuneo (Father) Shiho (Mother) Maho (Sister)