The pushy yet highly capable Student Council President of Oarai Girls' Academy. A third-year student. Despite her small stature, her management style is bold and broad. She is frequently seen snacking on her favorite dried sweet potatoes. She is the mastermind behind dragging Miho Nishizumi back into Tankery. Aiming to revive the sport at Oarai, she approached Miho specifically because of her past experience. Commander of the Hetzer. In her pursuit, she used forceful methods that showed total disregard for Miho's trauma regarding Tankery. While such coercive behavior is unbecoming of a student council, it is later revealed that the council had their own desperate reasons for these actions. Additionally, when Noriko Isobe from the disbanded Volleyball Club came to petition her, Anzu agreed to revive the club if they achieved excellent results in Tankery—though this was merely a verbal promise.

The Public Relations officer for the Oarai Girls' Academy Student Council. A monocle-wearing tactician who supports the President's heavy-handed leadership with perfect synchronicity. In the tank, she serves as both gunner and loader. Since President Anzu Kadotani often does nothing but eat dried sweet potatoes, Momo handles every role except driver by herself. Based on her intellectual appearance and official profile, she seems like a cool-headed strategist (and she tries to act the part, hating the nickname 'Momo-chan' as it ruins her image), but in reality, she has a very short fuse and is prone to emotional outbursts. Furthermore, she is mentally fragile and is the first to start despairing when things go south. Because she follows Anzu's vision so faithfully, she shares the council's moral flaws, such as justifying threats to force Miho into joining.

The gentle and easygoing Vice President of the Student Council. Due to her personality, she tends to be at the mercy of Anzu's whims and Momo's outbursts. Driver of the Hetzer. She is the most sensible person among the trio, though she did participate in the 'gentle' intimidation used to pull Miho Nishizumi into Tankery. She appears to handle almost all the council's menial tasks and paperwork alone, as Anzu and Momo rarely do their actual jobs. Like Anzu, her academic grades are top-tier. In the 'Final Chapter,' she plans to apply to the same national university as Anzu, and her passing is considered a near certainty.