CV: Hekiru Shiina A female officer in the Japan Ground Self-Defense Force, belonging to the Tank School Unit at the Fuji School. Her rank is Captain. She was dispatched as a special instructor for "Senshado" when Oarai Girls' Academy revived the sport (though she hasn't been seen much since the practice match before the Saunders University High School battle). Upon her arrival, she air-dropped her Type 10 tank from a transport plane into the parking lot, crashing into the School Headmaster's Ferrari, flipping it over, and then crushing it flat by driving over it. She has a boisterous and casual personality, frequently using English phrases like "Good job!" She often surprises everyone, such as by forcing the students into a practice match on the first day without even teaching them how to move the tanks. When Saori Takebe asked if instructors are popular with men, she boasted, "It's not about being popular; I've never missed a target I aimed for. My hit rate is 120%!" She is also a certified official of the Japan Senshado Federation and served as the chief judge for the finals of the National Senshado Tournament. She was once indebted to Shiho Nishizumi and is acquainted with both Miho and Maho Nishizumi. In the movie version, she served as the chief judge for Oarai's exhibition match. It is revealed that she is a member of the Japan Senshado Pro League Promotion Committee. Like Student Council President Anzu Kadotani, she was dissatisfied with the decision to close Oarai Girls' Academy. Together with Anzu, she went to seek help from Shichiro Kodama, the Chairman of the Senshado Federation. When the Chairman was uncooperative, citing the Ministry of Education's face regarding the World Championships, she pointed out that closing the winning school would damage the Federation's reputation. Ami further informed Shiho—who had been approached to chair the Pro League Establishment Committee—about Oarai's closure. Enlisting Shiho, who was eager for the Oarai team to redeem themselves, they directly negotiated with Renta Tsuji of the Ministry of Education to arrange a match against the University Selection Team. During the match, she served as chief judge again. When Tsuji protested the arrival of reinforcements from various powerhouse schools to help Oarai, she brushed him off by stating, "Only the opposing team captain can lodge an objection." Since the captain, Alice Shimada, accepted the situation, Ami officially recognized the formation of the Oarai Joint Team. Finally, after a desperate struggle, she loudly declared victory for the Oarai Joint Team after they defeated the University Selection Team. The novelization of the movie reveals parts of her background, including monstrous legends from her high school days, such as taking out fifteen enemy tanks single-handedly in a national tournament and a twelve-hour-long duel. She is currently active as a renowned tank commander in the corporate league. Because of this, fans speculate she might be an alumna of Saunders University High School, or perhaps Kuromorimine Girls' Academy given her history with Shiho Nishizumi, but the truth remains unknown.